upbraider vs reproacher

upbraider and reproacher both are nouns.

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

As nouns, upbraider and reproacher are synonyms defined as:

Other synonyms of upbraider include rebuker, reprover.

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