mansion vs residency

mansion

noun
  • An individual habitation or apartment within a large house or group of buildings. (Now chiefly in allusion to John 14:2.) 

  • An astrological house; a station of the moon. 

  • An apartment building. 

  • One of twenty-eight sections of the sky. 

  • Any of the branches of the Rastafari movement. 

  • A large house or building, usually built for the wealthy. 

  • A luxurious flat (apartment). 

residency

noun
  • The home or residence of a person, especially in the colonies. 

  • The condition of being a resident of a particular place. 

  • The position or term of a medical resident. 

  • Synonym of rezidentura 

  • The position of a musical artist who commonly performs at a particular venue. 

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