herb of grace vs Ruta graveolens

herb of grace and Ruta graveolens both are nouns.

Word	Noun	Adjective	Verb	Adverb
herb of grace	Yes	No	No	No
Ruta graveolens	Yes	No	No	No

As nouns, herb of grace and Ruta graveolens are synonyms defined as:

herb of grace and Ruta graveolens: European strong-scented perennial herb with grey-green bitter-tasting leaves; an irritant similar to poison ivy

Other synonyms of herb of grace include rue.

herb of grace (noun)	Ruta graveolens (noun)
European strong-scented perennial herb with grey-green bitter-tasting leaves; an irritant similar to poison ivy	European strong-scented perennial herb with grey-green bitter-tasting leaves; an irritant similar to poison ivy