boiling vs cookery

boiling and cookery both are nouns.

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

As nouns, cookery is a hypernym of boiling; that is, cookery is a word with a broader meaning than boiling:

boiling: cooking in a liquid that has been brought to a boil
cookery: the act of preparing something (as food) by the application of heat

Other hypernyms of boiling include cooking, preparation.

boiling (noun)	cookery (noun)
cooking in a liquid that has been brought to a boil	the act of preparing something (as food) by the application of heat
the application of heat to change something from a liquid to a gas

boiling (adverb)	cookery (adverb)
passionately or agitatedly