In professional sports, a franchise player is an athlete who is not simply the best player on their team, but a player that the team can build their franchise (team) around for the foreseeable future.
The standard error is the estimated standard deviation or measure of variability in the sampling distribution of a statistic. A low standard error means there is relatively less spread in the sampling distribution.
In science and engineering in general an error is defined as a difference between the desired and actual performance or behavior of a system or object. This definition is the basis of operation for many types of control systems, in which error is defined as the difference between a set point and the process value.