abrader vs abradant

abrader and abradant both are nouns.

Word	Noun	Adjective	Verb	Adverb
abrader	Yes	No	No	No
abradant	Yes	No	No	No

As nouns, abrader and abradant are synonyms defined as:

abrader and abradant: a tool or machine used for wearing down or smoothing or polishing

abrader (noun)	abradant (noun)
a tool or machine used for wearing down or smoothing or polishing	a tool or machine used for wearing down or smoothing or polishing
	a substance that abrades or wears down