condominium vs mansion

condominium

noun
  • An individual unit (such as an apartment) in such a complex. 

  • Joint sovereignty over a territory by two or more countries. 

  • The system of ownership by which such condominiums operate 

  • A region or territory under such rule. 

  • The legal tenure involved. 

mansion

noun
  • An apartment building. 

  • An astrological house; a station of the moon. 

  • One of twenty-eight sections of the sky. 

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

  • Any of the branches of the Rastafari movement. 

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

  • A luxurious flat (apartment). 

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