waxing vs coating

waxing and coating both are nouns.

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

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

Other hypernyms of waxing include application, covering.

waxing (noun)	coating (noun)
the application of wax to a surface	the work of applying something
a gradual increase in magnitude or extent	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)

waxing (adjective)	coating (adjective)
(of the moon) pertaining to the period during which the visible surface of the moon increases