meadow buttercup vs Ranunculus acris

meadow buttercup and Ranunculus acris both are nouns.

Word	Noun	Adjective	Verb	Adverb
meadow buttercup	Yes	No	No	No
Ranunculus acris	Yes	No	No	No

As nouns, meadow buttercup and Ranunculus acris are synonyms defined as:

meadow buttercup and Ranunculus acris: perennial European buttercup with yellow spring flowers widely naturalized especially in eastern North America

Other synonyms of meadow buttercup include tall buttercup, tall crowfoot, tall field buttercup.

meadow buttercup (noun)	Ranunculus acris (noun)
perennial European buttercup with yellow spring flowers widely naturalized especially in eastern North America	perennial European buttercup with yellow spring flowers widely naturalized especially in eastern North America