meal vs banquet

meal and banquet both are nouns.

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

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

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

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