snuffer vs doer

snuffer and doer both are nouns.

Word	Noun	Adjective	Verb	Adverb
snuffer	Yes	No	No	No
doer	Yes	No	No	No

As nouns, doer is a hypernym of snuffer; that is, doer is a word with a broader meaning than snuffer:

Other hypernyms of snuffer include actor, worker.

snuffer (noun)	doer (noun)
a cone-shaped implement with a handle; for extinguishing candles	a person who acts and gets things done
a person who uses snuff
a person who snuffs out candles