term:

Variance

variance n

1 : a disagreement between two documents or positions
;esp
: a disagreement between allegations (as in an indictment or complaint) and proof offered at trial that warrants an appropriate remedy (as a directed verdict or an acquittal) when prejudicial to the substantial rights of the defendant
2 : an authorization to do something contrary to the usual restriction [a granted by a state agency]
;esp
: permission for a use of real property that is prohibited by a zoning ordinance see also unnecessary hardship compare spot zoning