dress up vs fit out

dress up and fit out both are verbs.

Word	Noun	Adjective	Verb	Adverb
dress up	No	No	Yes	No
fit out	No	No	Yes	No

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

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

dress up (verb)	fit out (verb)
put on special clothes to appear particularly appealing and attractive	provide with clothes or put clothes on
dress in a costume	provide with (something) usually for a specific purpose
dress in a certain manner
make something appear superficially attractive
put a caparison on