foster vs practical nurse

foster

noun
  • The care given to another; guardianship. 

  • A foster parent. 

adj
  • Related by such care. 

  • Receiving such care. 

  • Providing parental care to children not related to oneself. 

verb
  • To cultivate and grow something. 

  • To nurture or bring up offspring, or to provide similar parental care to an unrelated child. 

  • To nurse or cherish something. 

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