disarmer vs doer

disarmer and doer both are nouns.

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

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

Other hypernyms of disarmer include actor, worker.

disarmer (noun)	doer (noun)
someone opposed to violence as a means of settling disputes	a person who acts and gets things done