femoral biceps vs musculus biceps femoris

femoral biceps and musculus biceps femoris both are nouns.

Word	Noun	Adjective	Verb	Adverb
femoral biceps	Yes	No	No	No
musculus biceps femoris	Yes	No	No	No

As nouns, femoral biceps and musculus biceps femoris are synonyms defined as:

femoral biceps and musculus biceps femoris: the biceps muscle of the thigh; it flexes the knee and rotates the leg laterally

femoral biceps (noun)	musculus biceps femoris (noun)
the biceps muscle of the thigh; it flexes the knee and rotates the leg laterally	the biceps muscle of the thigh; it flexes the knee and rotates the leg laterally