blacken vs cookery

blacken is not a noun while cookery is a noun.

Word	Noun	Adjective	Verb	Adverb
blacken	No	No	Yes	No
cookery	Yes	No	No	No

blacken (noun)	cookery (noun)
	the act of preparing something (as food) by the application of heat

blacken (verb)	cookery (verb)
make or become black
burn slightly and superficially so as to affect color