tall field buttercup vs tall buttercup

tall field buttercup and tall buttercup both are nouns.

Word	Noun	Adjective	Verb	Adverb
tall field buttercup	Yes	No	No	No
tall buttercup	Yes	No	No	No

As nouns, tall field buttercup and tall buttercup are synonyms defined as:

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

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

tall field buttercup (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