Cotinus obovatus vs smoke bush

Cotinus obovatus and smoke bush both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cotinus obovatus	Yes	No	No	No
smoke bush	Yes	No	No	No

As nouns, smoke bush is a hypernym of Cotinus obovatus; that is, smoke bush is a word with a broader meaning than Cotinus obovatus:

Cotinus obovatus: shrubby tree of southern United States having large plumes of feathery flowers resembling puffs of smoke
smoke bush: any of several shrubs or shrubby trees of the genus Cotinus

Other hypernyms of Cotinus obovatus include smoke tree.

Cotinus obovatus (noun)	smoke bush (noun)
shrubby tree of southern United States having large plumes of feathery flowers resembling puffs of smoke	any of several shrubs or shrubby trees of the genus Cotinus
	any of various shrubs of the genus Conospermum with panicles of mostly white woolly flowers