stave vs fit out

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

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

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

Other hypernyms of stave include equip, fit, outfit.

stave (noun)	fit out (noun)
one of several thin slats of wood forming the sides of a barrel or bucket
a crosspiece between the legs of a chair
(music) the system of five horizontal lines on which the musical notes are written

stave (verb)	fit out (verb)
burst or force (a hole) into something	provide with clothes or put clothes on
furnish with staves	provide with (something) usually for a specific purpose