greater celandine vs poppy

greater celandine and poppy both are nouns.

Word	Noun	Adjective	Verb	Adverb
greater celandine	Yes	No	No	No
poppy	Yes	No	No	No

As nouns, poppy is a hypernym of greater celandine; that is, poppy is a word with a broader meaning than greater celandine:

greater celandine: perennial herb with branched woody stock and bright yellow flowers
poppy: annual or biennial or perennial herbs having showy flowers

greater celandine (noun)	poppy (noun)
perennial herb with branched woody stock and bright yellow flowers	annual or biennial or perennial herbs having showy flowers