Baccharis viminea vs shrub

Baccharis viminea and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Baccharis viminea	Yes	No	No	No
shrub	Yes	No	No	No

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

Baccharis viminea: California shrub with slender leafy shoots that are important browse for mule deer
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Baccharis viminea include bush.

Baccharis viminea (noun)	shrub (noun)
California shrub with slender leafy shoots that are important browse for mule deer	a low woody perennial plant usually having several major stems