native cranberry vs shrub

native cranberry and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
native cranberry	Yes	No	No	No
shrub	Yes	No	No	No

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

native cranberry: small prostrate or ascending shrub having scarlet flowers and succulent fruit resembling cranberries; sometimes placed in genus Styphelia
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of native cranberry include bush.

native cranberry (noun)	shrub (noun)
small prostrate or ascending shrub having scarlet flowers and succulent fruit resembling cranberries; sometimes placed in genus Styphelia	a low woody perennial plant usually having several major stems