Carya glabra vs brown hickory

Carya glabra and brown hickory both are nouns.

Word	Noun	Adjective	Verb	Adverb
Carya glabra	Yes	No	No	No
brown hickory	Yes	No	No	No

As nouns, Carya glabra and brown hickory are synonyms defined as:

Carya glabra and brown hickory: an American hickory tree having bitter nuts

Other synonyms of Carya glabra include black hickory, pignut, pignut hickory.

Carya glabra (noun)	brown hickory (noun)
an American hickory tree having bitter nuts	an American hickory tree having bitter nuts