What is the distinction between a void contract and a voidable one?

A void contract is one that is altogether invalid and unenforceable and can never be anything else but invalid and unenforceable.

A voidable contract is one which has validity, but which it may be evaded. It may be ratified and turned into an enforceable contract by ratification or into a void contract by repudiation.

http://en.wikipedia.org/wiki/Void_contract

http://en.wikipedia.org/wiki/Voidable_contract

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