pyramidal bone vs wrist bone

pyramidal bone and wrist bone both are nouns.

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

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

pyramidal bone: a wrist bone that articulates with the pisiform and hamate and lunate bones
wrist bone: any of the eight small bones of the wrist of primates

Other hypernyms of pyramidal bone include carpal, carpal bone.

pyramidal bone (noun)	wrist bone (noun)
a wrist bone that articulates with the pisiform and hamate and lunate bones	any of the eight small bones of the wrist of primates