housebreak vs pilfer

housebreak

verb
  • To break into a house, typically to burgle it. 

  • To train an animal to avoid urinating or defecating in the house, except within a litterbox, toilet, or other receptacle. 

pilfer

verb
  • To steal in small quantities, or articles of small value; to practise petty theft. 

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