variance

noun

• the fact or quality of being different, divergent, or inconsistent:her light tone was at variance with her sudden trembling
• the state or fact of disagreeing or quarreling:they were at variance with all their previous allies
• chiefly Law a discrepancy between two statements or documents.
• Law an official dispensation from a rule or regulation, typically a building regulation.
• Statistics a quantity equal to the square of the standard deviation.