verb (v)

• substitute a person or thing for (another that is broken or inefficient or lost or no longer working or yielding what is expected)(verb.change)

  Example:
  He replaced the old razor blade.
  We need to replace the secretary that left a month ago.
  The insurance will replace the lost income.
  This antique vase can never be replaced.
  

  source: wordnet30
• take the place or move into the position of(verb.social)

  Example:
  Smith replaced Miller as CEO after Miller left.
  Mary replaced Susan as the team's captain and the highest-ranked player in the school.
  

  Synonym:
  supercede, supersede, supervene upon, supplant
  

  source: wordnet30
• put something back where it belongs(verb.contact)

  Example:
  Replace the book on the shelf after you have finished reading it.
  

  Synonym:
  put back
  

  source: wordnet30
• put in the place of another; switch seemingly equivalent items(verb.possession)

  Example:
  The con artist replaced the original with a fake Rembrandt.
  

  Synonym:
  exchange, interchange, substitute
  

  source: wordnet30
• To place again; to restore to a former place, position, condition, or the like.(verb)

  source: webster1913