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app - n. a computer program that performs a special function
curriculum - n. the courses that are taught by a school, college, etc.
filter - v. to pass something, through a filter to remove something unwanted
nursery - adj. a room where children sleep, play, and are sometimes taught
promotion - n. something that is done to make people aware of something and increase its sales or popularity
regulation - n. an official rule or law that says how something should be done
