European blueberry vs whortleberry

European blueberry and whortleberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
European blueberry	Yes	No	No	No
whortleberry	Yes	No	No	No

As nouns, European blueberry and whortleberry are synonyms defined as:

European blueberry and whortleberry: blue-black berries similar to American blueberries

Other synonyms of European blueberry include bilberry.

European blueberry (noun)	whortleberry (noun)
blue-black berries similar to American blueberries	blue-black berries similar to American blueberries
	erect European blueberry having solitary flowers and blue-black berries