about tautologies and contingent statements are true?

A contingent statement is an expression that describes a contingency plan.

A tautology is a truth$-$functional compound statement that is true for any possible combination of truth values for its simple components.

A contingent statement is a statement that is neither a tautology nor a contradiction.

A contingent statement is what an army contingent claims happened to cover up their mistakes.

The word tautology's Greek etymology is "repeating what has been said", and so a tautology is a vile creature who spreads rumours and gossips.

A tautology is the apology that the famous American band Toto gave after failing to write any great song on the rules of natural deduction.