dwarf sumac vs mountain sumac

dwarf sumac and mountain sumac both are nouns.

Word	Noun	Adjective	Verb	Adverb
dwarf sumac	Yes	No	No	No
mountain sumac	Yes	No	No	No

As nouns, dwarf sumac and mountain sumac are synonyms defined as:

dwarf sumac and mountain sumac: common nonpoisonous shrub of eastern North America with compound leaves and green paniculate flowers followed by red berries

Other synonyms of dwarf sumac include black sumac, Rhus copallina, shining sumac.

dwarf sumac (noun)	mountain sumac (noun)
common nonpoisonous shrub of eastern North America with compound leaves and green paniculate flowers followed by red berries	common nonpoisonous shrub of eastern North America with compound leaves and green paniculate flowers followed by red berries