bell heather vs heather bell

bell heather and heather bell both are nouns.

Word	Noun	Adjective	Verb	Adverb
bell heather	Yes	No	No	No
heather bell	Yes	No	No	No

As nouns, bell heather and heather bell are synonyms defined as:

bell heather and heather bell: common low European shrub with purple-red flowers

Other synonyms of bell heather include Erica cinerea, fine-leaved heath.

bell heather (noun)	heather bell (noun)
common low European shrub with purple-red flowers	common low European shrub with purple-red flowers
dwarf European shrub with rose-colored flowers