Hazardia cana vs shrub

Hazardia cana and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hazardia cana	Yes	No	No	No
shrub	Yes	No	No	No

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

Hazardia cana: western American shrubs having white felted foliage and yellow flowers that become red-purple
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Hazardia cana include bush.

Hazardia cana (noun)	shrub (noun)
western American shrubs having white felted foliage and yellow flowers that become red-purple	a low woody perennial plant usually having several major stems