Do you mean it sounds like "Boohs", if that's the case then it is "Booze"
Answer: washing our car
Explanation: because you dont need to always have a clean car so it wouldn't necessarily matter.
I think the answer is freedom of religion. This was the reason that most colonies were established in America, and one of the main reasons the colonists had a revolution.
Hope this helps! Please let me know if I'm wrong. :)