Carya laciniosa vs hickory

Carya laciniosa and hickory both are nouns.

Word	Noun	Adjective	Verb	Adverb
Carya laciniosa	Yes	No	No	No
hickory	Yes	No	No	No

As nouns, hickory is a hypernym of Carya laciniosa; that is, hickory is a word with a broader meaning than Carya laciniosa:

Carya laciniosa: hickory of the eastern United States resembling the shagbark but having a much larger nut
hickory: American hardwood tree bearing edible nuts

Other hypernyms of Carya laciniosa include hickory tree.

Carya laciniosa (noun)	hickory (noun)
hickory of the eastern United States resembling the shagbark but having a much larger nut	American hardwood tree bearing edible nuts
	valuable tough heavy hardwood from various hickory trees