vegetable ivory vs ivory nut

vegetable ivory and ivory nut both are nouns.

Word	Noun	Adjective	Verb	Adverb
vegetable ivory	Yes	No	No	No
ivory nut	Yes	No	No	No

As nouns, vegetable ivory and ivory nut are synonyms defined as:

vegetable ivory and ivory nut: nutlike seed of a South American palm; the hard white shell takes a high polish and is used for e.g. buttons

Other synonyms of vegetable ivory include apple nut.

vegetable ivory (noun)	ivory nut (noun)
nutlike seed of a South American palm; the hard white shell takes a high polish and is used for e.g. buttons	nutlike seed of a South American palm; the hard white shell takes a high polish and is used for e.g. buttons