ilium vs bone

ilium and bone both are nouns.

Word	Noun	Adjective	Verb	Adverb
ilium	Yes	No	No	No
bone	Yes	Yes	Yes	No

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

Other hypernyms of ilium include os.

ilium (noun)	bone (noun)
the upper and widest of the three bones making up the hipbone	a shade of white the color of bleached bones
	rigid connective tissue that makes up the skeleton of vertebrates
	the porous calcified substance from which bones are made

ilium (adjective)	bone (adjective)
	consisting of or made up of bone

ilium (verb)	bone (verb)
	remove the bones from
	study intensively, as before an exam