childproof vs kidproof

childproof

verb
  • To make something childproof. 

adj
  • Designed to be unable for a child to use, operate, or open. 

  • Made safe from children; resistant to damage by children. 

  • Made safe for children. 

kidproof

verb
  • childproof 

adj
  • childproof 

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