feijoa vs shrub

feijoa and shrub both are nouns.

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

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

Other hypernyms of feijoa include bush.

feijoa (noun)	shrub (noun)
dark-green kiwi-sized tropical fruit with white flesh; used chiefly for jellies and preserves	a low woody perennial plant usually having several major stems
South American shrub having edible greenish plumlike fruit