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coach- n. a person who teaches and trains an athlete or performer
positive - n. showing the presence of a particular germ, condition, or substance
stadium - n. a very large usually roofless building that has a large open area surrounded by many rows of seats and that is used for sports events, concerts, etc.
mask - n. a covering for your face or for part of your face
breeding ground- n. a place or situation that helps or allows something to grow, develop, etc.
forefront- n. the most important part or position — usually singular
commercial- n. an advertisement on radio or television
