climb vs clamber

climb and clamber both are nouns.

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

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

Other hyponyms of climb include scaling, mountain climbing, mountaineering, rock climbing.

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

Other hyponyms of climb include scramble, shin, shinny, skin, sputter, struggle.

climb (noun)	clamber (noun)
the act of climbing something	an awkward climb
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)	clamber (verb)
go up or advance	climb awkwardly, as if by scrambling
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