Luggage is any number of bags, cases and containers which hold a traveller's articles during transit. Types of luggage include suitcases, duffel bags, and tote bags. Today many types of luggage have wheels as an added convenience.
Suitcases are separate pieces of luggage that are used to contain items for use in travel. Suitcases often have wheels on the bottom of the bag to ease in the movement of the piece.