Definitions
1.NounThe birth of two or more things at the same time; A simultaneous coming into being.
2.NounThe state of being born into the same family, race, or group; a commonality of heritage or birthright.
3.NounThe act of growing or developing together.
4.NounA relationship between two or more elements of software in which changing one necessitates changing the others in order to maintain overall correctness; a metric for such a relationship.