numbers racket vs lottery

numbers racket and lottery both are nouns.

Word	Noun	Adjective	Verb	Adverb
numbers racket	Yes	No	No	No
lottery	Yes	No	No	No

As nouns, lottery is a hypernym of numbers racket; that is, lottery is a word with a broader meaning than numbers racket:

numbers racket: an illegal daily lottery
lottery: players buy (or are given) chances and prizes are distributed by casting lots

Other hypernyms of numbers racket include drawing.

numbers racket (noun)	lottery (noun)
an illegal daily lottery	players buy (or are given) chances and prizes are distributed by casting lots
	something that is regarded as a chance event