shoeshine vs coating

shoeshine and coating both are nouns.

Word	Noun	Adjective	Verb	Adverb
shoeshine	Yes	No	No	No
coating	Yes	No	No	No

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

shoeshine: a shiny finish put on shoes with polish and buffing
coating: a decorative texture or appearance of a surface (or the substance that gives it that appearance)

Other hypernyms of shoeshine include finish, finishing.

shoeshine (noun)	coating (noun)
the act of shining shoes	the work of applying something
a shiny finish put on shoes with polish and buffing	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)