herbs mercury vs boys-and-girls

herbs mercury and boys-and-girls both are nouns.

Word	Noun	Adjective	Verb	Adverb
herbs mercury	Yes	No	No	No
boys-and-girls	Yes	No	No	No

As nouns, herbs mercury and boys-and-girls are synonyms defined as:

herbs mercury and boys-and-girls: Eurafrican annual naturalized in America as a weed; formerly dried for use as a purgative, diuretic or antisyphilitic

Other synonyms of herbs mercury include herb mercury, Mercurialis annua.

herbs mercury (noun)	boys-and-girls (noun)
Eurafrican annual naturalized in America as a weed; formerly dried for use as a purgative, diuretic or antisyphilitic	Eurafrican annual naturalized in America as a weed; formerly dried for use as a purgative, diuretic or antisyphilitic