bilberry vs whortleberry

bilberry and whortleberry both are nouns.

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

As nouns, bilberry and whortleberry are synonyms defined as:

bilberry and whortleberry: blue-black berries similar to American blueberries

Other synonyms of bilberry include European blueberry.

As nouns, bilberry and whortleberry are synonyms defined as:

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

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

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