Mansion
Part of speech: noun
Definition: A large house or building. A luxurious flat (apartment). A house provided for a clergyman; a manse. A stopping-place during a journey; a stage. An astrological house; a station of the moon. One of twenty-eight sections of the sky. Any of the branches of the Rastafari movement (after John 14:2, "In my Father's house are many mansions").
Example sentence: Life got very good - we went from living in a one-bedroom apartment to a five-bedroom mansion by the time I was in high school. I had everything I wanted growing up, though all I wanted was music stuff - drums, a PC, turntables.
Residence
Part of speech: noun
Definition: The place where one lives.A building used as a home.The place where a corporation is established.The state of living in a particular place or environment.Street address of a person.
Example sentence: The Opposition aren't really the Opposition. They're just called the Opposition. But in fact they are the Opposition in exile. The Civil Service are the Opposition in residence.