replace in WordNet English dictionary

1. put in the place of another; switch seemingly equivalent items
   "the con artist replaced the original with a fake Rembrandt"; "substitute regular milk with fat-free milk"; "synonyms can be interchanged without a changing the context's meaning"
   substitute  replace  interchange  exchange 
   
2. put something back where it belongs
   "replace the book on the shelf after you have finished reading it"; "please put the clean dishes back in the cabinet when you have washed them"
   replace  put back 
   
3. substitute a person or thing for (another that is broken or inefficient or lost or no longer working or yielding what is expected)
   "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"
   replace 
   
4. take the place or move into the position of
   "Smith replaced Miller as CEO after Miller left"; "the computer has supplanted the slide rule"; "Mary replaced Susan as the team's captain and the highest-ranked player in the school"
   supplant  replace  supersede  supervene upon  supercede