swallow wort vs swallowwort

swallow wort and swallowwort both are nouns.

Word	Noun	Adjective	Verb	Adverb
swallow wort	Yes	No	No	No
swallowwort	Yes	No	No	No

As nouns, swallow wort and swallowwort are synonyms defined as:

swallow wort and swallowwort: perennial herb with branched woody stock and bright yellow flowers

Other synonyms of swallow wort include celandine, Chelidonium majus, greater celandine.

swallow wort (noun)	swallowwort (noun)
perennial herb with branched woody stock and bright yellow flowers	perennial herb with branched woody stock and bright yellow flowers
	tropical herb having orange-red flowers followed by pods suggesting a swallow with outspread wings; a weed throughout the tropics