caretaker vs practical nurse

caretaker

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. 

adj
  • Temporary, on a short term basis. 

practical nurse

noun
  • A person who is certified to provide custodial care such as help in walking, bathing, and feeding. 

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