suffer vs cramp

suffer is not a noun while cramp is a noun.

Word	Noun	Adjective	Verb	Adverb
suffer	No	No	Yes	No
cramp	Yes	No	Yes	No

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

Other hyponyms of suffer include break down, collapse, break up, collapse, crack, crack up, crock up, stress.

suffer (noun)	cramp (noun)
	a strip of metal with ends bent at right angles; used to hold masonry together
	a clamp for holding pieces of wood together while they are glued
	a painful and involuntary muscular contraction

suffer (verb)	cramp (verb)
be in pain	suffer from sudden painful contraction of a muscle
undergo (as of injuries and illnesses)	affect with or as if with a cramp
feel unwell or uncomfortable	prevent the progress or free movement of
get worse in quality	secure with a cramp
be set at a disadvantage
put up with something or somebody unpleasant
experience (emotional) pain
feel physical pain
undergo or be subjected to
undergo or suffer
be given to