musculus pectoralis vs pectoral

musculus pectoralis and pectoral both are nouns.

Word	Noun	Adjective	Verb	Adverb
musculus pectoralis	Yes	No	No	No
pectoral	Yes	Yes	No	No

As nouns, musculus pectoralis and pectoral are synonyms defined as:

musculus pectoralis and pectoral: either of two large muscles of the chest

Other synonyms of musculus pectoralis include pecs, pectoral muscle, pectoralis.

musculus pectoralis (noun)	pectoral (noun)
either of two large muscles of the chest	an adornment worn on the chest or breast
	either of two large muscles of the chest

musculus pectoralis (adjective)	pectoral (adjective)
	of or relating to the chest or thorax