 Unlike word processors, NLP considers the structure of human language (i.e., words make phrases; phrases make sentences which convey the idea or intent the user is trying to invoke).The ambiguous nature of human language makes it difficult for a machine to always correctly interpret the user's requests, which is why we have seen a shift toward natural-language understanding (NLU).NLU allows for sentiment analysis and conversational searches which allows a line of questioning to continue, with the context carried throughout the conversation.