obstacle – n. an object that you have to go around or over : something that blocks your path
superstar – n. an extremely famous and successful performer, athlete, etc.
host – n. a group that organizes an event and provides the things that are needed for that event.
clap – v. to hit the palms of your hands together usually more than once
silly – adj. playful and funny
elimination – n. the act of removing something (from a tournament)
contender– n. a person who has a good chance of winning something in a contest