tupelo vs tupelo tree

tupelo and tupelo tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
tupelo	Yes	No	No	No
tupelo tree	Yes	No	No	No

As nouns, tupelo and tupelo tree are synonyms defined as:

tupelo and tupelo tree: any of several gum trees of swampy areas of North America

tupelo (noun)	tupelo tree (noun)
any of several gum trees of swampy areas of North America	any of several gum trees of swampy areas of North America
pale soft wood of a tupelo tree especially the water gum