cooking vs percolation

cooking and percolation both are nouns.

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

As nouns, percolation is a hyponym of cooking; that is, percolation is a word with a more specific, narrower meaning than cooking:

cooking: the act of preparing something (as food) by the application of heat
percolation: the act of making coffee in a percolator

cooking (noun)	percolation (noun)
the act of preparing something (as food) by the application of heat	the act of making coffee in a percolator
	the filtration of a liquid for extraction or purification
	the slow passage of a liquid through a filtering medium