界面

界面	jiè miàn	contact surface / (computing) interface
界	jiè	(bound form) boundary; border / (bound form) realm
面	miàn	face / side / surface / aspect / top / classifier for objects with flat surfaces such as drums, mirrors, flags etc
面	miàn	variant of 面
面	miàn	flour / noodles / (of food) soft (not crunchy) / (slang) (of a person) ineffectual / spineless