subscription – n. an amount of money paid to regularly receive a product or service

generate – v. to bring into existence; to create

revenue – n. the amount of money produced; the money returned by an investment

lens – n. curved piece of glass used by cameras to capture pictures

display – n. the area where information and operations are shown on an electronic device

battery – n. object that provides power to things

laptop – n. a computer small enough to be carried around and used when the person is sitting

pattern – n. a particular way something is done or repeated