home office vs prefecture

home office

noun
  • The headquarters of an organization. 

  • A room, in a person's home, equipped as an office so that the person may work from home. 

prefecture

noun
  • The office or position of a prefect. 

  • The jurisdiction of a prefect; the region administered by a prefect, especially as a translation of certain French, Chinese, and Japanese administrative divisions. 

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