Old, not young

Words describing something old: a word describing a living thing that has existed for a long time.

• What words describe a person or animal that is old?
  old elderly aged aging ancient be getting on not be as young as you were patriarchal senior
• What words describe a plant that is old?
  old mature
• What words describe someone who is older than someone else?
  older elder
• What words describe someone who is older than everyone else?
  oldest eldest
• What words refer to being almost a particular age?
  be pushing be getting on for