Ranunculus acris vs tall buttercup

Ranunculus acris and tall buttercup both are nouns.

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

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

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

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

Ranunculus acris (noun)	tall buttercup (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