garment vs fit out

garment is a noun but fit out is not a noun.

Word	Noun	Adjective	Verb	Adverb
garment	Yes	No	Yes	No
fit out	No	No	Yes	No

As verbs, garment and fit out are synonyms defined as:

Other synonyms of garment include apparel, clothe, dress, enclothe, garb, habilitate, raiment, tog.

garment (noun)	fit out (noun)
an article of clothing

garment (verb)	fit out (verb)
provide with clothes or put clothes on	provide with clothes or put clothes on
	provide with (something) usually for a specific purpose