C-clamp vs clamp

C-clamp and clamp both are nouns.

Word	Noun	Adjective	Verb	Adverb
C-clamp	Yes	No	No	No
clamp	Yes	No	Yes	No

As nouns, clamp is a hypernym of C-clamp; that is, clamp is a word with a broader meaning than C-clamp:

C-clamp: a clamp in the shape of the letter C
clamp: a device (generally used by carpenters) that holds things firmly together

Other hypernyms of C-clamp include clinch.

C-clamp (noun)	clamp (noun)
a clamp in the shape of the letter C	a device (generally used by carpenters) that holds things firmly together

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