reproach vs blame

reproach and blame both are nouns.

Word	Noun	Adjective	Verb	Adverb
reproach	Yes	No	Yes	No
blame	Yes	Yes	Yes	No

As nouns, blame is a hyponym of reproach; that is, blame is a word with a more specific, narrower meaning than reproach:

Other hyponyms of reproach include self-reproach, self-reproof, rap.

reproach (noun)	blame (noun)
a mild rebuke or criticism	a reproach for some lapse or misdeed
disgrace or shame	an accusation that you are responsible for some lapse or misdeed

reproach (adjective)	blame (adjective)
	expletives used informally as intensifiers

reproach (verb)	blame (verb)
express criticism towards	attribute responsibility to
	put or pin the blame on
	harass with constant criticism