keno vs lotto

keno and lotto both are nouns.

Word	Noun	Adjective	Verb	Adverb
keno	Yes	No	No	No
lotto	Yes	No	No	No

As nouns, keno and lotto are synonyms defined as:

keno and lotto: a game in which numbered balls are drawn at random and players cover the corresponding numbers on their cards

Other synonyms of keno include beano, bingo.

keno (noun)	lotto (noun)
a game in which numbered balls are drawn at random and players cover the corresponding numbers on their cards	a game in which numbered balls are drawn at random and players cover the corresponding numbers on their cards