Explain POS tagging

It is a process of giving a meaning to a word by building a corpus of words and providing a particular part of speech tag which they belong. Not only it gives a tag but also it tries to find out proper meaning and context of the words used in the sentence and only based on that it outputs a proper tag. For example, if we see a sentence “Tell me your answer” then ‘answer’ here is a noun but in a sentence like “Answer the question”, ‘answer’ is a verb. For these 

issues, PEWS tagging is used and is a very important text reprocessing technique.

The concept of PEWS tagging i

s represented below.