bitter pecan vs Carya aquatica

bitter pecan and Carya aquatica both are nouns.

Word	Noun	Adjective	Verb	Adverb
bitter pecan	Yes	No	No	No
Carya aquatica	Yes	No	No	No

As nouns, bitter pecan and Carya aquatica are synonyms defined as:

bitter pecan and Carya aquatica: hickory of southern United States having many narrow leaflets and rather bitter nuts

Other synonyms of bitter pecan include water bitternut, water hickory.

bitter pecan (noun)	Carya aquatica (noun)
hickory of southern United States having many narrow leaflets and rather bitter nuts	hickory of southern United States having many narrow leaflets and rather bitter nuts