dwarf sumac vs sumac

dwarf sumac and sumac both are nouns.

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

As nouns, sumac is a hypernym of dwarf sumac; that is, sumac is a word with a broader meaning than dwarf sumac:

dwarf sumac: common nonpoisonous shrub of eastern North America with compound leaves and green paniculate flowers followed by red berries
sumac: a shrub or tree of the genus Rhus (usually limited to the non-poisonous members of the genus)

Other hypernyms of dwarf sumac include shumac, sumach.

dwarf sumac (noun)	sumac (noun)
common nonpoisonous shrub of eastern North America with compound leaves and green paniculate flowers followed by red berries	a shrub or tree of the genus Rhus (usually limited to the non-poisonous members of the genus)
	wood of a sumac