I'm in the mood for a bit of festive fun and games, and my idea is a variation of the Uxbridge English Dictionary, but based on confusing words. For example the difference between Plebeian and Plebiscite.

Plebeian of course originally referred to that class of Roman Citizen who, according to the census and the nature of their trade did not have the staus of patrician whereas Plebiscite is another word for a police station.

Any more confusing words?