Handled drinking glass, usually with heavy walls. Variations are handled goblets and coffee cups. Mugs, having handles, may take chunky decorations that are uncomfortable on glasses/goblets. On the other hand, large German drinking glasses ( rohmers) were given glass bumps ( prunts) at least partly to provide a grip for greasy hands.
A lidless, handled container of various forms and standard capacities. Frequently used in pubs to serve beer, ale, or spirits. Pub pieces may have a variety of marks to include makers, capacity, verification, and others which suggest provenance. Mugs are usually wider at the bottom than at the top. Silver mugs are often called "Canns".
A mug is a sturdily built type of cup often used for hot beverages, such as coffee, tea, or hot chocolate. Mugs, by definition, have handles. The mug often holds a larger amount of fluid and is usually used in less formal settings than the smaller, more refined cup.