reconciler vs mediator

reconciler and mediator both are nouns.

Word	Noun	Adjective	Verb	Adverb
reconciler	Yes	No	No	No
mediator	Yes	No	No	No

As nouns, mediator is a hypernym of reconciler; that is, mediator is a word with a broader meaning than reconciler:

Other hypernyms of reconciler include go-between, intercessor, intermediary, intermediator.

reconciler (noun)	mediator (noun)
someone who tries to bring peace	a negotiator who acts as a link between parties