apparel vs fit out

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

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

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

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

apparel (noun)	fit out (noun)
clothing in general

apparel (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