experience vs illusion

experience

noun
  • An activity one has performed. 

  • A collection of events and/or activities from which an individual or group may gather knowledge, opinions, and skills. 

  • The knowledge thus gathered. 

  • The effect upon the judgment or feelings produced by any event, whether witnessed or participated in; personal and direct impressions as contrasted with description or fancies; personal acquaintance; actual enjoyment or suffering. 

verb
  • To observe certain events; undergo a certain feeling or process; or perform certain actions that may alter one or contribute to one's knowledge, opinions, or skills. 

illusion

noun
  • A magician’s trick. 

  • A misapprehension; a belief in something that is in fact not true. 

  • Anything that seems to be something that it is not. 

  • The state of being deceived or misled. 

How often have the words experience and illusion occurred in a corpus of books? (source: Google Ngram Viewer )