@ gmwilliams & tsmog: Funny story about that pair of words. When my eldest grandson (now in the army) was about 3, my mom was reading to him from a picture book, identifying various kinds of vehicles; truck, sports car, bus, sedan, etc... and then she paused to make a connection for him, saying, "your daddy has a sedan." Sean sat up straight, and indignantly stated, "It's not a sedan! It's a Mercury Sable!"
My mom nearly fell over laughing.