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Clocks and Watches, devices used to measure or indicate the passage of time. A clock, which is larger than a watch, is usually intended to be kept in one place; a watch is designed to be carried or worn. Both types of timepieces require a source of power and a means of transmitting and controlling it, as well as indicators to register the lapse of time units.
A watch is a small portable timepiece or clock that displays the time and sometimes the day, date, month and year. In past centuries, these often took the form of pocket watches, which today are seldom carried or worn. In modern usage, watch is usually a contraction of wristwatch, a designation for the most popular style of timekeeping device worn on the wrist.
Because most watches lack a striking mechanism, such as a bell or gong to announce the passage of time, they are properly designated as timepieces, rather than clocks.
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