trapezoid vs wrist bone

trapezoid and wrist bone both are nouns.

Word	Noun	Adjective	Verb	Adverb
trapezoid	Yes	No	No	No
wrist bone	Yes	No	No	No

As nouns, wrist bone is a hypernym of trapezoid; that is, wrist bone is a word with a broader meaning than trapezoid:

Other hypernyms of trapezoid include carpal, carpal bone.

trapezoid (noun)	wrist bone (noun)
the wrist bone between the trapezium and the capitate bones	any of the eight small bones of the wrist of primates
a quadrilateral with two parallel sides