cramp vs muscle spasm

cramp and muscle spasm both are nouns.

Word	Noun	Adjective	Verb	Adverb
cramp	Yes	No	Yes	No
muscle spasm	Yes	No	No	No

As nouns, cramp and muscle spasm are synonyms defined as:

Other synonyms of cramp include spasm.

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

cramp (verb)	muscle spasm (verb)
suffer from sudden painful contraction of a muscle
affect with or as if with a cramp
prevent the progress or free movement of
secure with a cramp