fosterage vs instruction

fosterage

noun
  • The act of promoting or encouraging something. 

  • The act of fostering another's child as if it were one's own. 

  • The act of caring for another human being or animal. 

  • The condition of being the foster child. 

instruction

noun
  • The act of instructing, teaching, or furnishing with information or knowledge. 

  • An instance of the information or knowledge so furnished. 

  • An order or command. 

  • A set of directions provided by a manufacturer for the users of a product or service. 

  • A single operation of a processor defined by an instruction set architecture. 

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