Viccinium myrtillus vs whortleberry

Viccinium myrtillus and whortleberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
Viccinium myrtillus	Yes	No	No	No
whortleberry	Yes	No	No	No

As nouns, Viccinium myrtillus and whortleberry are synonyms defined as:

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

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

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