blank out vs redact

blank out is not a noun while redact is a noun.

Word	Noun	Adjective	Verb	Adverb
blank out	No	No	Yes	No
redact	Yes	No	Yes	No

As verbs, redact is a hypernym of blank out; that is, redact is a word with a broader meaning than blank out:

blank out: cut out, as for political reasons
redact: prepare for publication or presentation by correcting, revising, or adapting

Other hypernyms of blank out include edit.

blank out (noun)	redact (noun)
	someone who puts text into appropriate form for publication

blank out (verb)	redact (verb)
cut out, as for political reasons	prepare for publication or presentation by correcting, revising, or adapting
be unable to remember	formulate in a particular style or language