big shellbark hickory vs big shagbark

big shellbark hickory and big shagbark both are nouns.

Word	Noun	Adjective	Verb	Adverb
big shellbark hickory	Yes	No	No	No
big shagbark	Yes	No	No	No

As nouns, big shellbark hickory and big shagbark are synonyms defined as:

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

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

big shellbark hickory (noun)	big shagbark (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