musculus biceps brachii vs biceps brachii

musculus biceps brachii and biceps brachii both are nouns.

Word	Noun	Adjective	Verb	Adverb
musculus biceps brachii	Yes	No	No	No
biceps brachii	Yes	No	No	No

As nouns, musculus biceps brachii and biceps brachii are synonyms defined as:

musculus biceps brachii and biceps brachii: a muscle that flexes and supinates the forearm

Other synonyms of musculus biceps brachii include biceps humeri.

musculus biceps brachii (noun)	biceps brachii (noun)
a muscle that flexes and supinates the forearm	a muscle that flexes and supinates the forearm