reproacher vs rebuker

reproacher and rebuker both are nouns.

Word	Noun	Adjective	Verb	Adverb
reproacher	Yes	No	No	No
rebuker	Yes	No	No	No

As nouns, reproacher and rebuker are synonyms defined as:

Other synonyms of reproacher include reprover, upbraider.

reproacher (noun)	rebuker (noun)
someone who finds fault or imputes blame	someone who finds fault or imputes blame