Standard terminology for baggage includes the personal, carry-on, and checked bag. Each airline has its own baggage policies and regulations, but the gist remains: a personal bag is a small bag that you carry onto the plane and store under the seat in front of you; a carry-on bag is luggage that meets specific size guidelines and is brought on the plane with you to store in overhead bins; and checked luggage is larger than a carry-on, stored elsewhere on the plane, and has more freedoms regarding what you’re able to pack.