genus Celastrus vs bittersweet

genus Celastrus and bittersweet both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Celastrus	Yes	No	No	No
bittersweet	Yes	Yes	No	No

genus Celastrus (noun)	bittersweet (noun)
genus of woody vines and erect shrubs (type genus of the Celastraceae) that is native chiefly to Asia and Australia: includes bittersweet	twining shrub of North America having yellow capsules enclosing scarlet seeds
	poisonous perennial Old World vine having violet flowers and oval coral-red berries; widespread weed in North America

genus Celastrus (adjective)	bittersweet (adjective)
	tinged with sadness
	having a taste that is a mixture of bitterness and sweetness