innocence vs ploy

innocence

noun
  • Absence of responsibility for a crime, tort, etc. 

  • Lack of ability or intention to harm or damage. 

  • Lack of understanding about sensitive subjects such as sexuality and crime. 

ploy

verb
  • To form a column from a line of troops on some designated subdivision. 

noun
  • Sport; frolic. 

  • A tactic, strategy, or scheme. 

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