climb vs mountaineer

climb and mountaineer both are nouns.

Word	Noun	Adjective	Verb	Adverb
climb	Yes	No	Yes	No
mountaineer	Yes	No	Yes	No

As verbs, mountaineer is a hyponym of climb; that is, mountaineer is a word with a more specific, narrower meaning than climb:

Other hyponyms of climb include scale, escalade, ramp, ride.

climb (noun)	mountaineer (noun)
the act of climbing something	someone who climbs mountains
an event that involves rising to a higher point (as in altitude or temperature or intensity etc.)
an upward slope or grade (as in a road)

climb (verb)	mountaineer (verb)
go up or advance	climb mountains for pleasure as a sport
increase in value or to a higher point
improve one's social status
go upward with gradual or continuous progress
move with effort, by grasping
slope upward