Carya ovata vs shellbark

Carya ovata and shellbark both are nouns.

Word	Noun	Adjective	Verb	Adverb
Carya ovata	Yes	No	No	No
shellbark	Yes	No	No	No

As nouns, Carya ovata and shellbark are synonyms defined as:

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

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

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