Natural Language Processing (NLP) is a branch of artificial intelligence and computational linguistics that deals with the interaction between computers and humans using natural language. NLP techniques are used to analyze, understand, and generate human language in a computational way. The goal of NLP is to make it possible for computers to understand, interpret, and generate human language in a way that is both accurate and useful. NLP techniques are used in a wide range of applications, including machine translation, sentiment analysis, text classification, speech recognition, and question-answering systems. Some of the key techniques used in NLP include tokenization (splitting text into individual words), part-of-speech tagging (identifying the role of each word in a sentence), parsing (analyzing the structure of a sentence), and semantic analysis (determining the meaning of words and sentences). With the increasing amount of text data being generated every day, NLP has become an important area of research and development, and is being applied in many industries, including finance, healthcare, and customer service, among others.