buccinator muscle vs musculus buccinator

buccinator muscle and musculus buccinator both are nouns.

Word	Noun	Adjective	Verb	Adverb
buccinator muscle	Yes	No	No	No
musculus buccinator	Yes	No	No	No

As nouns, buccinator muscle and musculus buccinator are synonyms defined as:

buccinator muscle and musculus buccinator: a muscle that flattens the cheek and retracts the angle of the mouth

Other synonyms of buccinator muscle include cheek muscle.

buccinator muscle (noun)	musculus buccinator (noun)
a muscle that flattens the cheek and retracts the angle of the mouth	a muscle that flattens the cheek and retracts the angle of the mouth