Salsola kali vs shrub

Salsola kali and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Salsola kali	Yes	No	No	No
shrub	Yes	No	No	No

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

Salsola kali: bushy plant of Old World salt marshes and sea beaches having prickly leaves; burned to produce a crude soda ash
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Salsola kali include bush.

Salsola kali (noun)	shrub (noun)
bushy plant of Old World salt marshes and sea beaches having prickly leaves; burned to produce a crude soda ash	a low woody perennial plant usually having several major stems