共面

共面	gòng miàn	(geometry) coplanar
共	gòng	common / general / to share / together / total / altogether / abbr. for 共产党, Communist party
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