Chapati bread can be synonymous with roti (Indian) style breads or be a marketing term for a specific variety of griddle or flat bread. The important thing to keep in mind here is that Indian flatbreads can appear under a number of different names. Chapati, for instance, is often made with more finely milled whole wheat flour (called atta) than many other Indian flatbreads. Chapati also is sometimes prepared on a special, curved griddle. Visually, it's thin and round, but the overall size can vary.