plume poppy vs bocconia

plume poppy and bocconia both are nouns.

Word	Noun	Adjective	Verb	Adverb
plume poppy	Yes	No	No	No
bocconia	Yes	No	No	No

As nouns, plume poppy and bocconia are synonyms defined as:

plume poppy and bocconia: herb of China and Japan widely cultivated for its plumelike panicles of creamy white flowers

Other synonyms of plume poppy include Macleaya cordata.

plume poppy (noun)	bocconia (noun)
herb of China and Japan widely cultivated for its plumelike panicles of creamy white flowers	small Central American tree having loose racemes of purple-tinted green flowers
	herb of China and Japan widely cultivated for its plumelike panicles of creamy white flowers