blame vs impute

blame is a noun but impute is not a noun.

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

As verbs, impute is a hypernym of blame; that is, impute is a word with a broader meaning than blame:

Other hypernyms of blame include ascribe, assign, attribute.

blame (noun)	impute (noun)
a reproach for some lapse or misdeed
an accusation that you are responsible for some lapse or misdeed

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

blame (verb)	impute (verb)
attribute responsibility to	attribute or credit to
put or pin the blame on	attribute (responsibility or fault) to a cause or source
harass with constant criticism