butterfly flower vs poor man's orchid

butterfly flower and poor man's orchid both are nouns.

Word	Noun	Adjective	Verb	Adverb
butterfly flower	Yes	No	No	No
poor man's orchid	Yes	No	No	No

As nouns, butterfly flower and poor man's orchid are synonyms defined as:

butterfly flower and poor man's orchid: any plant of the genus Schizanthus having finely divided leaves and showy variegated flowers

Other synonyms of butterfly flower include schizanthus.

butterfly flower (noun)	poor man's orchid (noun)
any plant of the genus Schizanthus having finely divided leaves and showy variegated flowers	any plant of the genus Schizanthus having finely divided leaves and showy variegated flowers
shrub or small tree of Dutch Guiana having clusters of pink flowers streaked with purple