Cappuccinos are a little lighter in color than pure espresso drinks and require slightly larger cups for preparation than espresso shots. Cappuccino is a type of espresso-based drink.
Espresso is a type of coffee drink made from compacting finely ground beans into the portafilter of an espresso machine, where hot water is then forced through the coffee at a high pressure and removed in small concentrated shots.
Unlike pure espresso, cappuccino contains a serving of milk equal to the shot of espresso. A steam wand, part of most espresso machines, steams the milk until it froths into a mass almost double its original volume.