You may only be a freelancer or contract worker if you are self-employed . You do not have the same rights as employees. For example, neither the minimum wage under the collective agreement nor the right to leave apply.
As a freelancer , you commit to providing a service for a definite or indefinite period of time. You are not bound by instructions and can organize your time freely. The work equipment is usually provided by your client.
A contract for work and services is a contract for a specific work that you as a contractor have to deliver. You don't have to do it yourself, you can let someone else do the job.