mountain sumac vs shining sumac

mountain sumac and shining sumac both are nouns.

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

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

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

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

mountain sumac (noun)	shining 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