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raffle (noun)

    A drawing, often held as a fundraiser, in which tickets or chances are sold to win a prize.
        e.g.: He entered a raffle to win a lifetime supply of toothpaste, but he did not win.

glossary (noun)

    A list of terms in a particular domain of knowledge with their definitions.

exertion (noun)

    An expenditure of physical or mental effort.

clavis (noun)

    A Roman key.
    A device for restraint of the hands.
    A glossary.

prevalence (noun)

    The quality or condition of being prevalent; superior strength, force, or influence; general existence, reception, or practice; wide extension; as the prevalence of virtue, of a fashion, or of a disease; the prevalence of a rumor.