Logophile is a noun that refers to a lover of words. 

The Greek word logo (LOW go) means ‘words,’ while the suffix P-H-I-L-E means ‘a lover of.’ Here’s an example of logophile in use:

When Annette told me she never misses an episode of Word of the Day, she explained to me that she was such a logophile that her love of words makes her hungry to learn new ones. And here I was thinking it was the dulcet tones of the show’s host that made her a fan.