musculus serratus posterior vs posterior serratus muscle

musculus serratus posterior and posterior serratus muscle both are nouns.

Word	Noun	Adjective	Verb	Adverb
musculus serratus posterior	Yes	No	No	No
posterior serratus muscle	Yes	No	No	No

As nouns, musculus serratus posterior and posterior serratus muscle are synonyms defined as:

musculus serratus posterior and posterior serratus muscle: skeletal muscle that draws the rib cage backward and downward

Other synonyms of musculus serratus posterior include serratus posterior.

musculus serratus posterior (noun)	posterior serratus muscle (noun)
skeletal muscle that draws the rib cage backward and downward	skeletal muscle that draws the rib cage backward and downward