laurel sumac vs shrub

laurel sumac and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
laurel sumac	Yes	No	No	No
shrub	Yes	No	No	No

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

laurel sumac: small aromatic evergreen shrub of California having paniculate leaves and whitish berries; in some classifications included in genus Rhus
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of laurel sumac include bush.

laurel sumac (noun)	shrub (noun)
small aromatic evergreen shrub of California having paniculate leaves and whitish berries; in some classifications included in genus Rhus	a low woody perennial plant usually having several major stems