meal vs feast

meal and feast both are nouns.

Word	Noun	Adjective	Verb	Adverb
meal	Yes	No	No	No
feast	Yes	No	Yes	No

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

meal (noun)	feast (noun)
the food served and eaten at one time	something experienced with great delight
coarsely ground foodstuff; especially seeds of various cereal grasses or pulse	an elaborate party (often outdoors)
any of the occasions for eating food that occur by custom or habit at more or less fixed times	a meal that is well prepared and greatly enjoyed
	a ceremonial dinner party for many people

meal (verb)	feast (verb)
	partake in a feast or banquet
	provide a feast or banquet for
	gratify