quad vs musculus quadriceps femoris

quad and musculus quadriceps femoris both are nouns.

Word	Noun	Adjective	Verb	Adverb
quad	Yes	No	No	No
musculus quadriceps femoris	Yes	No	No	No

As nouns, quad and musculus quadriceps femoris are synonyms defined as:

quad and musculus quadriceps femoris: a muscle of the thigh that extends the leg

Other synonyms of quad include quadriceps, quadriceps femoris.

quad (noun)	musculus quadriceps femoris (noun)
a rectangular area surrounded on all sides by buildings	a muscle of the thigh that extends the leg
(printing) a block of type without a raised letter; used for spacing between words or sentences
a muscle of the thigh that extends the leg
one of four children born at the same time from the same pregnancy