barilla vs shrub

barilla and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
barilla	Yes	No	No	No
shrub	Yes	No	No	No

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

barilla: 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 barilla include bush.

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