perk up vs repair

perk up is not a noun while repair is a noun.

Word	Noun	Adjective	Verb	Adverb
perk up	No	No	Yes	No
repair	Yes	No	Yes	No

As verbs, repair is a hyponym of perk up; that is, repair is a word with a more specific, narrower meaning than perk up:

perk up (noun)	repair (noun)
	the act of putting something in working order again
	a frequently visited place
	a formal way of referring to the condition of something

perk up (verb)	repair (verb)
gain or regain energy	give new life or energy to
cause to be alert and energetic	restore by replacing a part or putting together what is torn or broken
	set straight or right
	move, travel, or proceed toward some place
	make amends for; pay compensation for