"deviation" in the noun sense
1. deviation, divergence, departure, difference
a variation that deviates from the standard or norm
"the deviation from the mean"
the difference between an observed value and the expected value of a variable or function
the error of a compass due to local magnetic disturbances
4. deviation, deviance
5. diversion, deviation, digression, deflection, deflexion, divagation
a turning aside (of your course or attention or concern
"a diversion from the main highway"
"a digression into irrelevant details"
"a deflection from his goal"
Source: WordNet® (An amazing lexical database of English)
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