biceps brachii vs biceps humeri

biceps brachii and biceps humeri both are nouns.

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

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

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

Other synonyms of biceps brachii include musculus biceps brachii.

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