bellwort vs merry bells

bellwort and merry bells both are nouns.

Word	Noun	Adjective	Verb	Adverb
bellwort	Yes	No	No	No
merry bells	Yes	No	No	No

As nouns, bellwort and merry bells are synonyms defined as:

bellwort and merry bells: any of various plants of the genus Uvularia having yellowish drooping bell-shaped flowers

Other synonyms of bellwort include wild oats.

bellwort (noun)	merry bells (noun)
any of various plants of the genus Uvularia having yellowish drooping bell-shaped flowers	any of various plants of the genus Uvularia having yellowish drooping bell-shaped flowers