The difference between Contingency and Tautology

When used as nouns, contingency means the quality of being contingent, of happening by chance, whereas tautology means redundant use of words, a pleonasm, an unnecessary and tedious repetition.


check bellow for the other definitions of Contingency and Tautology

  1. Contingency as a noun (uncountable):

    The quality of being contingent, of happening by chance; unpredictability.

  2. Contingency as a noun (countable):

    A possibility; something which may or may not happen. A chance occurrence, especially in finance, unexpected expenses.

  3. Contingency as a noun (countable):

    An amount of money which a party to a contract has to pay to the other party (usually the supplier of a major project to the client) if he or she does not fulfill the contract according to the specification.

  4. Contingency as a noun (logic, countable):

    A statement which is neither a tautology nor a contradiction.

  1. Tautology as a noun (uncountable):

    Redundant use of words, a pleonasm, an unnecessary and tedious repetition.

    Examples:

    "It is tautology to say, "Forward Planning"."

  2. Tautology as a noun (countable):

    An expression that features tautology.

    Examples:

    "The expression "raze to the ground" is a tautology, since the word "[[raze]]" includes the notion "to the ground"."

  3. Tautology as a noun (countable, logic):

    In propositional logic: a statement that is true for all truth values of its propositional variables. In first-order logic: a statement that is true for all truth values of its Boolean atoms.