what is god?

how any one define god?some say Him/Her as Allah,some as Jesus,some as Rama ever2 give them different name.is there really anything exist in the world like god.it has still different -2 opinion on this.but as i think god is a power where science find itself unable 2 define different incidents and scenario.god is a power who give us some kind of boost up support when we are in trouble.i called only that power as god.