garment vs frock

garment and frock both are nouns.

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

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

garment (noun)	frock (noun)
an article of clothing	a one-piece garment for a woman; has skirt and bodice
	a habit worn by clerics
	a long, loose outer garment

garment (verb)	frock (verb)
provide with clothes or put clothes on	put a frock on