shoeshine vs finishing

shoeshine and finishing both are nouns.

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

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

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

Other hypernyms of shoeshine include coating, finish.

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