mountaineer vs go up

mountaineer is a noun but go up is not a noun.

Word	Noun	Adjective	Verb	Adverb
mountaineer	Yes	No	Yes	No
go up	No	No	Yes	No

As verbs, go up is a hypernym of mountaineer; that is, go up is a word with a broader meaning than mountaineer:

Other hypernyms of mountaineer include climb, climb up, mount.

mountaineer (noun)	go up (noun)
someone who climbs mountains

mountaineer (verb)	go up (verb)
climb mountains for pleasure as a sport	increase in value or to a higher point
	burn completely; be consumed or destroyed by fire
	move upward
	go upward with gradual or continuous progress
	be erected, built, or constructed
	move towards
	travel up