buddleia vs butterfly bush

buddleia and butterfly bush both are nouns.

Word	Noun	Adjective	Verb	Adverb
buddleia	Yes	No	No	No
butterfly bush	Yes	No	No	No

As nouns, buddleia and butterfly bush are synonyms defined as:

buddleia and butterfly bush: tropical shrub having clusters of white or violet or yellow flowers

buddleia (noun)	butterfly bush (noun)
tropical shrub having clusters of white or violet or yellow flowers	tropical shrub having clusters of white or violet or yellow flowers