poaching vs cooking

poaching and cooking both are nouns.

Word	Noun	Adjective	Verb	Adverb
poaching	Yes	No	No	No
cooking	Yes	No	No	No

As nouns, cooking is a hypernym of poaching; that is, cooking is a word with a broader meaning than poaching:

poaching: cooking in simmering liquid
cooking: the act of preparing something (as food) by the application of heat

Other hypernyms of poaching include cookery, preparation.

poaching (noun)	cooking (noun)
cooking in simmering liquid	the act of preparing something (as food) by the application of heat