robe vs fit out

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

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

As verbs, fit out is a hypernym of robe; that is, fit out is a word with a broader meaning than robe:

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

robe (noun)	fit out (noun)
any loose flowing garment
outerwear consisting of a long flowing garment used for official or ceremonial occasions

robe (verb)	fit out (verb)
clothe formally; especially in ecclesiastical robes	provide with clothes or put clothes on
cover as if with clothing	provide with (something) usually for a specific purpose