king nut hickory vs king nut

king nut hickory and king nut both are nouns.

Word	Noun	Adjective	Verb	Adverb
king nut hickory	Yes	No	No	No
king nut	Yes	No	No	No

As nouns, king nut hickory and king nut are synonyms defined as:

king nut hickory and king nut: hickory of the eastern United States resembling the shagbark but having a much larger nut

Other synonyms of king nut hickory include big shagbark, big shellbark, big shellbark hickory, Carya laciniosa.

king nut hickory (noun)	king nut (noun)
hickory of the eastern United States resembling the shagbark but having a much larger nut	hickory of the eastern United States resembling the shagbark but having a much larger nut