What is the difference between hold baggage and checked baggage?

Hold baggage and checked baggage are terms used interchangeably to refer to luggage that is checked in at the airport and stored in the cargo hold of the aircraft during a flight. The main difference is that hold baggage typically refers to all luggage that is checked in, including both checked baggage and carry-on luggage, while checked baggage specifically refers to luggage that is too large or heavy to be carried onto the plane and must be checked in at the airport.