In this week's Grammar Girl podcast, we learn that "mansion" comes from the French word for "house." It was originally just a regular house, but our tendency to think of French things as fancy led to "mansion" meaning a big, expensive house.
I also investigate a house-related familect: Why would a mother ask a daughter if a boy at school "gave her any house"?
PODLINK: https://pod.link/173429229
YOUTUBE: https://youtu.be/dw-InJtuoOY
TRANSCRIPT: https://grammar-girl.simplecast.com/episodes/house-mansion/transcript