Campanula persicifolia vs willow bell

Campanula persicifolia and willow bell both are nouns.

Word	Noun	Adjective	Verb	Adverb
Campanula persicifolia	Yes	No	No	No
willow bell	Yes	No	No	No

As nouns, Campanula persicifolia and willow bell are synonyms defined as:

Campanula persicifolia and willow bell: perennial European bellflower with racemose white or blue flowers

Other synonyms of Campanula persicifolia include peach bell, peach bells.

Campanula persicifolia (noun)	willow bell (noun)
perennial European bellflower with racemose white or blue flowers	perennial European bellflower with racemose white or blue flowers