"Elevater" is a person who elevates the rank, status, importance of something, or someone else's spirit, whereas "elevator" is a machine that takes people and goods from one level to another in a building.
A trip to a grocery store, convenience store, or gas station for the sole purpose of buying an excessive amount of junk food and sugary drinks, usually with friends. A chud run often happens late at night and ends with everyone involved hating themselves afterwards.