bilberry vs whinberry

bilberry and whinberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
bilberry	Yes	No	No	No
whinberry	Yes	No	No	No

As nouns, bilberry and whinberry are synonyms defined as:

bilberry and whinberry: erect European blueberry having solitary flowers and blue-black berries

Other synonyms of bilberry include blaeberry, Viccinium myrtillus, whortleberry.

bilberry (noun)	whinberry (noun)
blue-black berries similar to American blueberries	erect European blueberry having solitary flowers and blue-black berries
erect blueberry of western United States having solitary flowers and somewhat sour berries
erect European blueberry having solitary flowers and blue-black berries