big-bud hickory vs black hickory

big-bud hickory and black hickory both are nouns.

Word	Noun	Adjective	Verb	Adverb
big-bud hickory	Yes	No	No	No
black hickory	Yes	No	No	No

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

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

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

big-bud 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