heather vs Calluna vulgaris

heather and Calluna vulgaris both are nouns.

Word	Noun	Adjective	Verb	Adverb
heather	Yes	No	No	No
Calluna vulgaris	Yes	No	No	No

As nouns, heather and Calluna vulgaris are synonyms defined as:

heather and Calluna vulgaris: common Old World heath represented by many varieties; low evergreen grown widely in the Northern Hemisphere

Other synonyms of heather include broom, ling, Scots heather.

heather (noun)	Calluna vulgaris (noun)
interwoven yarns of mixed colors producing muted greyish shades with flecks of color	common Old World heath represented by many varieties; low evergreen grown widely in the Northern Hemisphere
common Old World heath represented by many varieties; low evergreen grown widely in the Northern Hemisphere