A popular—and one of the most exciting—fields of machine learning and deep learning applications is NLP, which refers to a collection of techniques and methods developed to understand and generate human language. The goals of NLP begin with comprehending the meaning of human language text and extend to generating human language, such that the generated sentences are meaningful and make sense to humans who read that text. NLP has found major usage in building systems that are able to take instructions and requests directly from humans in the form of natural language, such as chatbots. However, chatbots also need to respond in natural language, which is another aspect of NLP.

Let's study some common terms related to NLP.