apple nut vs vegetable ivory

apple nut and vegetable ivory both are nouns.

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

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

apple nut and vegetable ivory: 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 apple nut include ivory nut.

apple nut (noun)	vegetable ivory (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