cooking vs toasting

cooking and toasting both are nouns.

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

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

cooking: the act of preparing something (as food) by the application of heat
toasting: cooking to a brown crispiness over a fire or on a grill

cooking (noun)	toasting (noun)
the act of preparing something (as food) by the application of heat	cooking to a brown crispiness over a fire or on a grill