struggle vs clamber

struggle and clamber both are nouns.

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

As verbs, struggle and clamber are synonyms defined as:

Other synonyms of struggle include scramble, shin, shinny, skin, sputter.

struggle (noun)	clamber (noun)
strenuous effort	an awkward climb
an energetic attempt to achieve something
an open clash between two opposing groups (or individuals)

struggle (verb)	clamber (verb)
be engaged in a fight; carry on a fight	climb awkwardly, as if by scrambling
to exert strenuous effort against opposition
climb awkwardly, as if by scrambling
make a strenuous or labored effort