caretaker vs prisoner

caretaker

adj
  • Temporary, on a short term basis. 

noun
  • Someone who takes care of a person; a parent, carer or other guardian. 

  • Someone who takes care of a place or thing; someone looking after a place, or responsible for keeping it in good repair. 

prisoner

noun
  • Any person held against their will. 

  • A person who is or feels confined or trapped by a situation or a set of circumstances. 

  • A person incarcerated in a prison, while on trial or serving a sentence. 

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