garb vs frock

garb and frock both are nouns.

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

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

garb (noun)	frock (noun)
clothing of a distinctive style or for a particular occasion	a one-piece garment for a woman; has skirt and bodice
	a habit worn by clerics
	a long, loose outer garment

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