childship vs preadolescence

childship

noun
  • The state or relation of being a child. 

preadolescence

noun
  • The period between childhood and adolescence, between the ages of about 9 and 11 for girls, and 10 and 12 for boys. 

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