American sweet gum vs sweet gum

American sweet gum and sweet gum both are nouns.

Word	Noun	Adjective	Verb	Adverb
American sweet gum	Yes	No	No	No
sweet gum	Yes	No	No	No

As nouns, American sweet gum and sweet gum are synonyms defined as:

American sweet gum and sweet gum: a North American tree of the genus Liquidambar having prickly spherical fruit clusters and fragrant sap

Other synonyms of American sweet gum include bilsted, Liquidambar styraciflua, red gum, sweet gum tree.

American sweet gum (noun)	sweet gum (noun)
a North American tree of the genus Liquidambar having prickly spherical fruit clusters and fragrant sap	a North American tree of the genus Liquidambar having prickly spherical fruit clusters and fragrant sap
	aromatic exudate from the sweet gum tree
	reddish-brown wood and lumber from heartwood of the sweet gum tree used to make furniture