Service sector implies providing the service directly to the end user/customer and would include employment such as waiter/waitress or taxi driver.

Non-service sector would include assembly line worker or farmer.

industry sector , raw materials sector , human resources sector , financial resources sector , market sector , technology sector , economic conditions sector , government sector ,

its a third sector

Nominal Sector or Monetary Sector

Simply stated, the joint sector is a form of partnership between the public sector an the private sector