In the aviation industry, the primary difference between a carry-on bag and baggage (specifically "checked baggage") lies in its location and accessibility during flight. A carry-on bag, also known as hand luggage, is small enough to stay with you in the cabin, typically stored in the overhead locker or under the seat in front of you. It is designed for convenience and immediate access to essentials like electronics, medications, and documents. Baggage, or checked luggage, refers to the larger suitcases that you hand over to the airline at the check-in desk. These are stowed in the aircraft's cargo hold and are inaccessible until you reach your final destination. Carry-on bags are subject to strict "liquid rules" (3-1-1) and size limits, whereas checked baggage allows for larger quantities of liquids and bulkier items but carries the risk of being lost or delayed. Essentially, carry-ons are for "convenience and security," while baggage is for "capacity."