coinage vs coin

coinage and coin both are nouns.

Word	Noun	Adjective	Verb	Adverb
coinage	Yes	No	No	No
coin	Yes	No	Yes	No

As nouns, coin is a hyponym of coinage; that is, coin is a word with a more specific, narrower meaning than coinage:

coinage (noun)	coin (noun)
the act of inventing a word or phrase	a flat metal piece (usually a disc) used as money
a newly invented word or phrase
coins collectively

coinage (verb)	coin (verb)
	form by stamping, punching, or printing
	make up