The use of a word or a title of contract may not be the real truth.
Example, a sale agreement may be worded as a lease (for tax purposes) but the content is a sale.
Or, an employee is called a contractor, has a contract that says independent contractor or agent. Similarly, an employee may sign a settlement agreement, but the true substance is no more than a termination.
The content of the contract and actual relationship is what matters (substance over form). One of the leading cases in this regard was that of an estate agent. The court found that the agent was an employee