arsenous anhydride vs ratsbane

arsenous anhydride and ratsbane both are nouns.

Word	Noun	Adjective	Verb	Adverb
arsenous anhydride	Yes	No	No	No
ratsbane	Yes	No	No	No

As nouns, arsenous anhydride and ratsbane are synonyms defined as:

arsenous anhydride and ratsbane: a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer

Other synonyms of arsenous anhydride include arsenic, arsenic trioxide, arsenous oxide, white arsenic.

arsenous anhydride (noun)	ratsbane (noun)
a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer	a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer