bitter pignut vs Carya cordiformis

bitter pignut and Carya cordiformis both are nouns.

Word	Noun	Adjective	Verb	Adverb
bitter pignut	Yes	No	No	No
Carya cordiformis	Yes	No	No	No

As nouns, bitter pignut and Carya cordiformis are synonyms defined as:

bitter pignut and Carya cordiformis: hickory of the eastern United States having a leaves with 7 or 9 leaflets and thin-shelled very bitter nuts

Other synonyms of bitter pignut include bitter hickory, bitternut, bitternut hickory, swamp hickory.

bitter pignut (noun)	Carya cordiformis (noun)
hickory of the eastern United States having a leaves with 7 or 9 leaflets and thin-shelled very bitter nuts	hickory of the eastern United States having a leaves with 7 or 9 leaflets and thin-shelled very bitter nuts