mintage vs coinage

mintage and coinage both are nouns.

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

As nouns, mintage and coinage are synonyms defined as:

Other synonyms of mintage include metal money, specie.

mintage (noun)	coinage (noun)
act or process of minting coins	the act of inventing a word or phrase
coins collectively	a newly invented word or phrase
fee paid to a mint by the government for minting a coin	coins collectively