Nyssa aquatica vs water gum

Nyssa aquatica and water gum both are nouns.

Word	Noun	Adjective	Verb	Adverb
Nyssa aquatica	Yes	No	No	No
water gum	Yes	No	No	No

As nouns, Nyssa aquatica and water gum are synonyms defined as:

Nyssa aquatica and water gum: columnar swamp tree of southeastern to midwestern North America yielding pale soft easily worked wood

Nyssa aquatica (noun)	water gum (noun)
columnar swamp tree of southeastern to midwestern North America yielding pale soft easily worked wood	columnar swamp tree of southeastern to midwestern North America yielding pale soft easily worked wood