finish coat vs coating

finish coat and coating both are nouns.

Word	Noun	Adjective	Verb	Adverb
finish coat	Yes	No	No	No
coating	Yes	No	No	No

As nouns, coating is a hypernym of finish coat; that is, coating is a word with a broader meaning than finish coat:

Other hypernyms of finish coat include coat, plaster.

finish coat (noun)	coating (noun)
the final coating of (e.g., paint, plaster, varnish, etc.)	the work of applying something
	a thin layer covering something
	a heavy fabric suitable for coats
	a decorative texture or appearance of a surface (or the substance that gives it that appearance)