muscle vs eye muscle

muscle and eye muscle both are nouns.

Word	Noun	Adjective	Verb	Adverb
muscle	Yes	No	Yes	No
eye muscle	Yes	No	No	No

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

muscle: one of the contractile organs of the body
eye muscle: one of the small muscles of the eye that serve to rotate the eyeball

muscle (noun)	eye muscle (noun)
possessing muscular strength	one of the small muscles of the eye that serve to rotate the eyeball
authority or power or force (especially when used in a coercive way)
one of the contractile organs of the body
animal tissue consisting predominantly of contractile cells
a bully employed as a thug or bodyguard

muscle (verb)	eye muscle (verb)
make one's way by force