white-heart hickory vs black hickory

white-heart hickory and black hickory both are nouns.

Word	Noun	Adjective	Verb	Adverb
white-heart hickory	Yes	No	No	No
black hickory	Yes	No	No	No

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

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

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

white-heart hickory (noun)	black hickory (noun)
smooth-barked North American hickory with 7 to 9 leaflets bearing a hard-shelled edible nut	an American hickory tree having bitter nuts
	smooth-barked North American hickory with 7 to 9 leaflets bearing a hard-shelled edible nut
	North American walnut tree with hard dark wood and edible nut