Contractor is synonymous with contractor. "Contractor" comes from the word "contract" which means a letter of agreement or a contract agreement can also mean a lease, so that the contractor can be equated with a person or a legal entity or business entity.
The area of contracting business is actually very wide and each contractor has a business focus and specialization in their respective fields, for example:
Building contractor providing construction services
Contractor in the field of labor procurement services
Defense and military contractors
And others
