Definitions of variance:

• noun:   the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value
• noun:   an activity that varies from a norm or standard
• noun:   discord that splits a group
• noun:   an event that departs from expectations
• noun:   the quality of being subject to variation
• noun:   a difference between conflicting facts or claims or opinions