buffalo nut vs oil nut

buffalo nut and oil nut both are nouns.

Word	Noun	Adjective	Verb	Adverb
buffalo nut	Yes	No	No	No
oil nut	Yes	No	No	No

As nouns, buffalo nut and oil nut are synonyms defined as:

Other synonyms of buffalo nut include elk nut.

buffalo nut (noun)	oil nut (noun)
shrub of southeastern United States parasitic on roots of hemlocks having sparse spikes of greenish flowers and pulpy drupes	oily drupaceous fruit of rabbitwood
oily drupaceous fruit of rabbitwood