minder vs practical nurse

minder

noun
  • One who minds, tends, or watches something such as a child, a machine, or cattle; a keeper. 

  • A monitor assigned by the authorities to someone, such as a foreign visitor (to exercise control over their contacts with the populace) or a journalist or someone who is speaking to journalists (to monitor and control what they say). 

  • A personal bodyguard. 

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 minder and practical nurse occurred in a corpus of books? (source: Google Ngram Viewer )