bone vs ivory

bone and ivory both are nouns.

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

As nouns, bone and ivory are synonyms defined as:

Other synonyms of bone include off-white, pearl.

bone (noun)	ivory (noun)
a shade of white the color of bleached bones	a shade of white the color of bleached bones
rigid connective tissue that makes up the skeleton of vertebrates	a hard smooth ivory colored dentine that makes up most of the tusks of elephants and walruses
the porous calcified substance from which bones are made

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

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