equipment usually means tools for a particular purpose: for example, "sports equipment."A device is something that has been invented.A facility is usually a place where some activity takes place: for example, a hospital is a "medical facility" and a prison can be called a "correctional facility."A machine is anything that human beings construct that uses energy to accomplish a task: for example, a water wheel, an internal combustion engine, or a computer.An installment is one of several parts of something that becomes complete in time: for example, paying a loan on an installment plan, or publishing a story in weekly installments. An appliance is usually a piece of equipment used around the house, like a vacuum cleaner or a clothes dryer.
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