What is the meaning of affairs?

noun

• A vaguely specified concern.
  • usage: "several matters to attend to"; "it is none of your affair"; "things are going well"
  • synonyms: matter, affair, thing
• A usually secretive or illicit sexual relationship.
  • synonyms: affair, affaire, intimacy, liaison, involvement, amour
• A vaguely specified social event.
  • usage: "the party was quite an affair"; "an occasion arranged to honor the president"; "a seemingly endless round of social functions"
  • synonyms: affair, occasion, social occasion, function, social function
• Matters of personal concern.
  • usage: "get his affairs in order"
  • synonyms: personal business, personal matters
• Transactions of professional or public interest.
  • usage: "news of current affairs"; "great affairs of state"