intervention vs reinforcer

intervention

noun
  • An orchestrated attempt to convince somebody with an addiction or other psychological problem to seek professional help and/or change their behavior. 

  • The action of intervening; interfering in some course of events. 

  • An action taken or procedure performed; an operation. 

  • A legal motion through which a person or entity who has not been named as a party to a case seeks to have the court order that they be made a party. 

reinforcer

noun
  • Something that reinforces; something that strengthens a behavior. 

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