One of the most commonly recognized time-keeping tools is the clock. However, there are numerous synonyms that can also be used to describe clocks. Some of these include timepiece, watch, chronometer, timer, hourglass, sundial, and hour meter. Each of these differs in their form and function, but they all serve the same purpose of measuring time. A timepiece can refer to any device used for measuring time, including clocks, watches, and even some mobile phones. A chronometer is a high-precision timepiece used for scientific purposes, while an hour meter is a tool that measures the amount of time an engine has run. No matter what synonym is used, all these devices help us keep track of time in our daily lives.