What am I?

I have keys but no doors, I have space but no rooms, I allow you to enter but you are never able to leave. What am I?

I come in different pronounciations. I distinguish you from others. I come from different origins and have different meanings.

As a state in America. I am round on both sides and high in the middle. What am I?

I am black when clean and white when dirty. What am I?

Riddles and Answers