infringement vs petty theft

infringement

noun
  • A violation or breach, as of a law. 

  • An encroachment on a right, a person, a territory, or a property. 

petty theft

noun
  • A theft of property having a value lower than a certain small amount set forth in a statute, and considered to be a less serious class of crime. 

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