garment vs jacket

garment and jacket both are nouns.

Word	Noun	Adjective	Verb	Adverb
garment	Yes	No	Yes	No
jacket	Yes	No	Yes	No

As verbs, jacket is a hyponym of garment; that is, jacket is a word with a more specific, narrower meaning than garment:

garment (noun)	jacket (noun)
an article of clothing	a short coat
	an outer wrapping or casing
	(dentistry) dental appliance consisting of an artificial crown for a broken or decayed tooth
	the tough metal shell casing for certain kinds of ammunition
	the outer skin of a potato

garment (verb)	jacket (verb)
provide with clothes or put clothes on	put a jacket on
	provide with a thermally non-conducting cover