herb mercury vs Mercurialis annua

herb mercury and Mercurialis annua both are nouns.

Word	Noun	Adjective	Verb	Adverb
herb mercury	Yes	No	No	No
Mercurialis annua	Yes	No	No	No

As nouns, herb mercury and Mercurialis annua are synonyms defined as:

herb mercury and Mercurialis annua: Eurafrican annual naturalized in America as a weed; formerly dried for use as a purgative, diuretic or antisyphilitic

Other synonyms of herb mercury include boys-and-girls, herbs mercury.

herb mercury (noun)	Mercurialis annua (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