clamp vs bench clamp

clamp and bench clamp both are nouns.

Word	Noun	Adjective	Verb	Adverb
clamp	Yes	No	Yes	No
bench clamp	Yes	No	No	No

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

clamp: a device (generally used by carpenters) that holds things firmly together
bench clamp: a clamp used to hold work in place on a workbench

Other hyponyms of clamp include C-clamp, cramp, pipe clamp, pipe vise, press.

clamp (noun)	bench clamp (noun)
a device (generally used by carpenters) that holds things firmly together	a clamp used to hold work in place on a workbench

clamp (verb)	bench clamp (verb)
impose or inflict forcefully
fasten or fix with a clamp