brunch vs meal

brunch and meal both are nouns.

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

As nouns, meal is a hypernym of brunch; that is, meal is a word with a broader meaning than brunch:

Other hypernyms of brunch include repast.

brunch (noun)	meal (noun)
combination of breakfast and lunch; usually served in late morning	the food served and eaten at one time
	coarsely ground foodstuff; especially seeds of various cereal grasses or pulse
	any of the occasions for eating food that occur by custom or habit at more or less fixed times

brunch (verb)	meal (verb)
eat a meal in the late morning