Lottery
Part of speech: noun
Definition: A scheme for the distribution of prizes by lot or chance, especially a gaming scheme in which one or more tickets bearing particular numbers draw prizes, the other tickets are blanks. An affair of chance. Allotment; a thing allotted.
Raffle
Part of speech: verb
Definition: To award something by means of a raffle or random drawing, often used with off.
Part of speech: noun
Definition: A drawing, often held as a fundraiser, in which tickets or chances are sold to win a prize.