shellbark vs shagbark hickory

shellbark and shagbark hickory both are nouns.

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

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

shellbark and shagbark hickory: North American hickory having loose grey shaggy bark and edible nuts

Other synonyms of shellbark include Carya ovata, shagbark, shellbark hickory.

shellbark (noun)	shagbark hickory (noun)
North American hickory having loose grey shaggy bark and edible nuts	North American hickory having loose grey shaggy bark and edible nuts