behavior vs encroachment

behavior

noun
  • The way a living creature behaves or acts generally. 

  • An instance of the way a living creature behaves. 

  • The way a device or system operates. 

  • Observable response produced by an organism. 

  • Human conduct relative to social norms. 

  • A state of probation about one's conduct. 

encroachment

noun
  • That which is gained by such unlawful intrusion. 

  • An intrusion upon another's possessions or rights; infringement. 

  • An unlawful diminution of the possessions of another. 

  • An entry into a place or area that was previously uncommon; an advance beyond former borders; intrusion; incursion. 

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