false pimpernel vs bastard pimpernel

false pimpernel and bastard pimpernel both are nouns.

Word	Noun	Adjective	Verb	Adverb
false pimpernel	Yes	No	No	No
bastard pimpernel	Yes	No	No	No

As nouns, false pimpernel and bastard pimpernel are synonyms defined as:

false pimpernel and bastard pimpernel: weedy plant having short dry chafflike leaves

Other synonyms of false pimpernel include chaffweed.

false pimpernel (noun)	bastard pimpernel (noun)
weedy plant having short dry chafflike leaves	weedy plant having short dry chafflike leaves