versifier vs author

versifier and author both are nouns.

Word	Noun	Adjective	Verb	Adverb
versifier	Yes	No	No	No
author	Yes	No	Yes	No

As nouns, author is a hypernym of versifier; that is, author is a word with a broader meaning than versifier:

versifier: a writer who composes rhymes; a maker of poor verses (usually used as terms of contempt for minor or inferior poets)
author: writes (books or stories or articles or the like) professionally (for pay)

Other hypernyms of versifier include writer.

versifier (noun)	author (noun)
a writer who composes rhymes; a maker of poor verses (usually used as terms of contempt for minor or inferior poets)	writes (books or stories or articles or the like) professionally (for pay)
	someone who originates or causes or initiates something

versifier (verb)	author (verb)
	be the author of