coiner vs author

coiner and author both are nouns.

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

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

Other hypernyms of coiner include generator, source.

coiner (noun)	author (noun)
a skilled worker who coins or stamps money	writes (books or stories or articles or the like) professionally (for pay)
someone who is a source of new words or new expressions	someone who originates or causes or initiates something
a maker of counterfeit coins

coiner (verb)	author (verb)
	be the author of