musculus abductor pollicis vs thumb

musculus abductor pollicis and thumb both are nouns.

Word	Noun	Adjective	Verb	Adverb
musculus abductor pollicis	Yes	No	No	No
thumb	Yes	No	Yes	No

musculus abductor pollicis (noun)	thumb (noun)
the abductor muscle of the thumb	the part of a glove that provides a covering for the thumb
	a convex molding having a cross section in the form of a quarter of a circle or of an ellipse
	the thick short innermost digit of the forelimb

musculus abductor pollicis (verb)	thumb (verb)
	feel or handle with the fingers
	travel by getting free rides from motorists
	look through a book or other written material