What is the meaning of divergence?

noun

• The act of moving away in different direction from a common point.
  • usage: "an angle is formed by the divergence of two straight lines"
  • synonyms: divergency
• A variation that deviates from the standard or norm.
  • usage: "the deviation from the mean"
  • synonyms: deviation, departure, difference
• An infinite series that has no limit.
  • synonyms: divergency
• A difference between conflicting facts or claims or opinions.
  • usage: "a growing divergence of opinion"
  • synonyms: discrepancy, disagreement, variance