NLP stands for Natural Language Processing, a branch of computer science that comes under Artificial Intelligence. Natural Language Processing (NLP) is a method of communication used by a computer to understand the human language. Language is a channel of communication through which we can read, write, and speak. NLP is a communication channel by which a machine can understand the natural language that is the human language or vice-versa. Before understanding the Natural Language Processing (NLP) in brief, we should know the need for Text Mining because a computer or machine requires structured data. The major part of the daily generating data is unstructured, like human speech. So it’s a big challenge to develop the application of Natural Language Processing (NLP).