white-heart hickory vs big-bud hickory

white-heart hickory and big-bud hickory both are nouns.

Word	Noun	Adjective	Verb	Adverb
white-heart hickory	Yes	No	No	No
big-bud hickory	Yes	No	No	No

As nouns, white-heart hickory and big-bud hickory are synonyms defined as:

white-heart hickory and big-bud hickory: smooth-barked North American hickory with 7 to 9 leaflets bearing a hard-shelled edible nut

Other synonyms of white-heart hickory include black hickory, Carya tomentosa, mockernut, mockernut hickory.

white-heart hickory (noun)	big-bud hickory (noun)
smooth-barked North American hickory with 7 to 9 leaflets bearing a hard-shelled edible nut	smooth-barked North American hickory with 7 to 9 leaflets bearing a hard-shelled edible nut