cowl muscle vs musculus trapezius

cowl muscle and musculus trapezius both are nouns.

Word	Noun	Adjective	Verb	Adverb
cowl muscle	Yes	No	No	No
musculus trapezius	Yes	No	No	No

As nouns, cowl muscle and musculus trapezius are synonyms defined as:

cowl muscle and musculus trapezius: either of two flat triangular muscles of the shoulder and upper back that are involved in moving the shoulders and arms

Other synonyms of cowl muscle include trapezius, trapezius muscle.

cowl muscle (noun)	musculus trapezius (noun)
either of two flat triangular muscles of the shoulder and upper back that are involved in moving the shoulders and arms	either of two flat triangular muscles of the shoulder and upper back that are involved in moving the shoulders and arms