"Macrofoam" (pictured), or milk frothed with larger air bubbles, is traditionally used in cappuccinos and does not allow for latte art, whereas "Microfoam" is used in caffè lattes and allows for the making of latte art.
Microfoam is finely textured milk used for making espresso-based coffee drinks, particularly those with latte art. It is typically made with the steam wand of an espresso machine, which pumps steam into a pitcher of milk.
The opposite of microfoam is macrofoam (also called dry foam, in contrast to the wet foam of microfoam), which has visibly large bubbles, a style of milk traditionally used for cappuccinos.