arsenous oxide vs ratsbane

arsenous oxide and ratsbane both are nouns.

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

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

arsenous oxide 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 oxide include arsenic, arsenic trioxide, arsenous anhydride, white arsenic.

arsenous oxide (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