superior rectus vs rectus superior

superior rectus and rectus superior both are nouns.

Word	Noun	Adjective	Verb	Adverb
superior rectus	Yes	No	No	No
rectus superior	Yes	No	No	No

As nouns, superior rectus and rectus superior are synonyms defined as:

superior rectus and rectus superior: the ocular muscle whose contraction turns the eyeball upward and medially

Other synonyms of superior rectus include superior rectus muscle.

superior rectus (noun)	rectus superior (noun)
the ocular muscle whose contraction turns the eyeball upward and medially	the ocular muscle whose contraction turns the eyeball upward and medially