Explanation:

- Void contracts are those that cannot be enforced by law. An error in a clause can lead to a contract being void if it is fundamentally flawed.

- Voidable contracts are valid and enforceable unless canceled by one party due to certain issues, like errors or misrepresentation. An error might make a contract voidable by the affected party.

- Valid contracts are legally binding and do not have significant errors affecting enforceability.

- Illegal contracts involve terms contrary to law, making them unenforceable.