attire vs get up

attire is a noun but get up is not a noun.

Word	Noun	Adjective	Verb	Adverb
attire	Yes	No	Yes	No
get up	No	No	Yes	No

As verbs, attire and get up are synonyms defined as:

attire and get up: put on special clothes to appear particularly appealing and attractive

attire (noun)	get up (noun)
clothing of a distinctive style or for a particular occasion

attire (verb)	get up (verb)
put on special clothes to appear particularly appealing and attractive	get up and out of bed
	cause to rise
	put on special clothes to appear particularly appealing and attractive
	develop
	study intensively, as before an exam
	arrange by systematic planning and united effort
	raise from a lower to a higher position
	rise to one's feet