Chilean hazelnut vs shrub

Chilean hazelnut and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Chilean hazelnut	Yes	No	No	No
shrub	Yes	No	No	No

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

Chilean hazelnut: Chilean shrub bearing coral-red fruit with an edible seed resembling a hazelnut
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Chilean hazelnut include bush.

Chilean hazelnut (noun)	shrub (noun)
Chilean shrub bearing coral-red fruit with an edible seed resembling a hazelnut	a low woody perennial plant usually having several major stems