clamp vs bring down

clamp is a noun but bring down is not a noun.

Word	Noun	Adjective	Verb	Adverb
clamp	Yes	No	Yes	No
bring down	No	No	Yes	No

As verbs, bring down is a hypernym of clamp; that is, bring down is a word with a broader meaning than clamp:

Other hypernyms of clamp include impose, inflict, visit.

clamp (noun)	bring down (noun)
a device (generally used by carpenters) that holds things firmly together

clamp (verb)	bring down (verb)
impose or inflict forcefully	cut down on; make a reduction in
fasten or fix with a clamp	impose something unpleasant
	cause to be enthusiastic
	cause to come to the ground
	move something or somebody to a lower position
	cause the downfall of; of rulers