Juglans nigra vs black hickory

Juglans nigra and black hickory both are nouns.

Word	Noun	Adjective	Verb	Adverb
Juglans nigra	Yes	No	No	No
black hickory	Yes	No	No	No

As nouns, Juglans nigra and black hickory are synonyms defined as:

Juglans nigra and black hickory: North American walnut tree with hard dark wood and edible nut

Other synonyms of Juglans nigra include black walnut, black walnut tree.

Juglans nigra (noun)	black hickory (noun)
North American walnut tree with hard dark wood and 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