swamp hickory vs bitternut

swamp hickory and bitternut both are nouns.

Word	Noun	Adjective	Verb	Adverb
swamp hickory	Yes	No	No	No
bitternut	Yes	No	No	No

As nouns, swamp hickory and bitternut are synonyms defined as:

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

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

swamp hickory (noun)	bitternut (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