water bitternut vs water hickory

water bitternut and water hickory both are nouns.

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

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

water bitternut and water hickory: hickory of southern United States having many narrow leaflets and rather bitter nuts

Other synonyms of water bitternut include bitter pecan, Carya aquatica.

water bitternut (noun)	water hickory (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