What is the meaning of exclusion?

noun

• The state of being excluded.
• The state of being excommunicated.
  • synonyms: excommunication, censure
• A deliberate act of omission.
  • usage: "with the exception of the children, everyone was told the news"
  • synonyms: exception, elision
• The act of forcing out someone or something.
  • usage: "the ejection of troublemakers by the police"; "the child's expulsion from school"
  • synonyms: ejection, expulsion, riddance