Natural Language Processing (NLP) helps us to communicate or talk with a computer just like we talk to a human. NLP can also be defined as the intersection of Artificial Intelligence (AI), Linguistics and Computer Science, that helps the machine or computer to understand, interpret and manipulate human language. There are two main parts to NLP: 1. Data Preprocessing 2. Algorithm development Here, in this blog we'll be only looking about the first and most important process, "data preprocessing". Data preprocessing is the most essential step for any Machine Learning model. It plays a major role in deciding the performance of the model.