Synonyms for Divergence (same or very similar meaning)
WordNet sense 1 (a variation that deviates from the standard or norm):
departure, deviation, differenceWordNet sense 2 (an infinite series that has no limit):
divergencyWordNet sense 3 (a difference between conflicting facts or claims or opinions):
disagreement, discrepancy, varianceFrom the ODE community, based on WordNetadd/edit