TECHNOLOGY - the use of knowledge to invent new devices or tools, DEVICE - something that is mechanical or electrical that we use for a particular purpose, TOOLS - instruments used to do a job, PROBLEM - a situation that causes difficulties, TO INVENT - to create something new, TO USE - to do something with a tool or device, MECHANICAL - working by using moving parts, ELECTRICAL - working by using electricity, PURPOSE - the reason something exists or is used

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