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Valentina Gomez
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Natural Language Generation vs Processing


Have you ever wondered how machines can talk to us in our language? How do they understand what we say and write, and how do they respond to us? The answer lies in two amazing technologies: Natural Language Generation (NLG) and Natural Language Processing (NLP) that involve Natural Language Understanding. In this blog post, you will learn what NLG and NLP are, how they differ from each other, why they are important for Artificial Intelligence (AI), what they can do for us, and what the future holds for them!

What is Natural Language Generation (NLG) ?

Natural Language Generation (NLG) is the area of Artificial Intelligence that makes machines write like humans. It works like this: you give the machine some data, facts, or rules, and it turns them into sentences, paragraphs, or even stories. The machine tries to write in a way that sounds natural and human, so you can’t tell the difference in most cases. For example, suppose you have a lot of data about different products. NLG can use this data to write product descriptions that are fun to read. You can use NLG for many things, such as content creation, making images, writing reports, sending personalized messages, and talking to virtual assistants.

How Does Natural Language Generation Work?

NLG is not a single technique but a collection of methods and algorithms that can be applied to different data types and tasks. However, a general framework for NLG can be described as follows:

Content Analysis. The first step is where the NLG system analyzes the input data and decides what information to include in the output. That may involve filtering, aggregating, or selecting the most relevant or interesting data points, depending on the goal and context of the task.

Data Structuring. NLG system organizes the selected information into a coherent structure, such as a logical order, a hierarchy, or a template, in the second step. 

Grammatical Structuring. Then, in the third step, the NLG system converts the structured data into natural language sentences using grammatical rules and vocabulary. That may be choosing the appropriate words, phrases, or expressions, depending on the style and tone of the output.

Language Aggregation. In the final step, the NLG system combines the generated sentences into a complete text or speech using linguistic devices, such as punctuation, conjunctions, or transitions.

NGL and Artificial Intelligence 

NLG plays a vital role in enhancing the human-like capabilities of AI systems. By generating natural language output, NLG enables machines to communicate effectively with humans, improving user interactions and experiences. It finds applications in various domains, such as personalized content generation, data storytelling, dynamic reporting, and automated customer service. It adds a layer of human-like communication that bridges the gap between machines and humans, making Artificial Intelligence systems more understandable and relatable.

Natural Language Generation Examples

Natural Language Generation has found numerous practical applications across various industries. NLG generates personalized marketing messages, product descriptions, and social media content in the marketing domain. 

In the financial sector, NLG is utilized for automated financial reports, investment analysis, speech tagging, and portfolio summaries. NLG is also employed in healthcare for generating patient reports, medical summaries, and discharge instructions. The applications of NLG extend to eCommerce, journalism, machine translation, Data Visualization, and more.

What is Natural Language Processing (NLP)?

NLP stands for Natural Language Processing, a part of Artificial Intelligence (AI) that makes machines understand and talk to us in our language. It works like this: you say or write something to the machine, and it tries to figure out what you mean and what it wants. Then, the machine says or writes something back to you in a way that makes sense and is relevant to the situation.

Natural Language Processing can do many things, depending on your needs. For example, NLP can tell how you feel from your writing, whether happy, sad, or angry. That is called sentiment analysis. NLP can also sort documents into different groups based on what they are about. 

Speech recognition is another fascinating area of NLP, where computers are trained to convert spoken language into written text. This technology has revolutionized how we interact with voice assistants in our everyday lives, allowing us to give commands or ask questions and enabling interactive voice responses.

How Does Natural Language Processing Work?

NLP models find relationships between the constituent parts of language — for example, the letters, words, and sentences in a text dataset. These relationships are often represented by numerical values, such as vectors or matrices, that capture the features or characteristics of the language data. For instance, a word vector can convey a word's meaning, usage, and context. At the same time, a sentence matrix can represent a sentence's structure, syntax, and sentiment in a chat response. 

NLP and Artificial Intelligence

NLP is a cornerstone in Artificial Intelligence systems that deal with language-related tasks. NLP powers applications such as Chatbots, AI-driven assistants, language translation, language modeling, sentiment analysis, semantic analysis, and information extraction by enabling machines to comprehend and process human language. NLP techniques allow machines to analyze vast amounts of textual data, extract meaningful insights, and respond intelligently to user queries. NLP is critical to making AI systems more usable, intelligent, and contextually aware.

Natural Language Processing Examples

Natural Language Processing has revolutionized many industries with its practical applications. In the customer service sector, NLP powers Chatbots that can understand and respond to customer queries, helping businesses provide quick and efficient support. In the healthcare industry, 

NLP also enables the analysis of electronic health records, clinical notes, and medical literature to assist with clinical decision-making and research. It also plays a pivotal role in sentiment analysis, information retrieval, spam detection, and content recommendation systems.

Natural Language Generation vs. Natural Language Processing

NLG vs NLP Functionality and Purpose

Natural Language Generation and Natural Language Processing are different things machines can do with human language. While NLG is about making machines write like humans, NLP is about making machines understand and talk to humans.

Further, NLG systems take data as input in nuances of language and turn it into clear, relevant, and accurate text. They can write stories, articles, descriptions, speech formats, emails, and more based on the data they have. They try to make the text sound natural and human-like so you can enjoy reading it.

On the other hand, NLP systems take human language as input and try to determine what it means and what to do with it. They can understand human language's words, sentences, and contexts and generate appropriate and helpful responses. They can analyze emotions, translate languages, chat with humans, and answer questions.

NLG vs NLP Technology and Algorithms 

The underlying technology and algorithms employed in NLG and NLP differ as well. Natural Language Generation systems typically generate text with rule-based approaches, statistical models, or machine learning techniques. These systems may rely on predefined templates, language models, or Neural Networks (NN) to create natural-sounding and contextually relevant output.

Machine Learning techniques, such as Deep Learning and Neural Networks, can also train NLG models on vast amounts of data, enabling them to generate highly accurate and contextually appropriate text.

Regarding NLP, the techniques used are more diverse and encompass a broad range of approaches. Syntactic parsing is one such technique that focuses on analyzing the grammatical structure of sentences, identifying the role of each word, and understanding how they relate to each other.

The Future of NLG and NLP

The future of NLG holds exciting possibilities. Advances in NLG technology will likely result in more sophisticated systems that can generate highly creative and contextually aware narrative structures. NLG systems might become capable of understanding nuances, emotions, and cultural references, thereby producing text (Speech Generation) output that is even more human-like. Moreover, NLG could be seamlessly integrated into various applications, enabling real-time dynamic text generation and facilitating more personalized and engaging content.

The future of NLP looks equally promising. As AI continues to evolve, NLP techniques are expected to become more powerful in understanding complex language structures, sentiments, and context.  Advancements in Deep Learning and Neural Networks Artificial Intelligence ecosystems will likely enhance the accuracy and efficiency of NLP systems. This factor enables us to tackle challenging tasks. Furthermore, NLP could find applications in fields like law, education, and healthcare, transforming industries and revolutionizing human-like language interaction with machines.


The incredible potential of Artificial Intelligence and Language-based applications cannot be overstated. As we continue to develop them, we're creating smarter machines and building better human interaction with machines. By embracing and harnessing the power of NLG and NLP, we are taking a step towards revolutionizing how we communicate and interact in the digital age!