closing vs coda

closing and coda both are nouns.

Word	Noun	Adjective	Verb	Adverb
closing	Yes	Yes	No	No
coda	Yes	No	No	No

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

Other hyponyms of closing include anticlimax, bathos, epilog, epilogue, epilog, epilogue, peroration, finale.

closing (noun)	coda (noun)
termination of operations	the closing section of a musical composition
the act of closing something
a concluding action
approaching a particular destination; a coming closer; a narrowing of a gap
the last section of a communication

closing (adjective)	coda (adjective)
final or ending