sweet gum vs red gum

sweet gum and red gum both are nouns.

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

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

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

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

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

sweet gum and red gum: reddish-brown wood and lumber from heartwood of the sweet gum tree used to make furniture

Other synonyms of sweet gum include hazelwood, satin walnut.

sweet gum (noun)	red gum (noun)
a North American tree of the genus Liquidambar having prickly spherical fruit clusters and fragrant sap	red gum tree of Tasmania
aromatic exudate from the sweet gum tree	very large red gum tree
reddish-brown wood and lumber from heartwood of the sweet gum tree used to make furniture	a North American tree of the genus Liquidambar having prickly spherical fruit clusters and fragrant sap
	reddish-brown wood and lumber from heartwood of the sweet gum tree used to make furniture
	reddish-brown dried gummy exudation from any of several trees of the genus Eucalyptus especially Eucalyptus camaldulensis