musculus triceps brachii vs triceps brachii

musculus triceps brachii and triceps brachii both are nouns.

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

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

musculus triceps brachii and triceps brachii: the skeletal muscle having three origins that extends the forearm when it contracts

musculus triceps brachii (noun)	triceps brachii (noun)
the skeletal muscle having three origins that extends the forearm when it contracts	the skeletal muscle having three origins that extends the forearm when it contracts