noun
the action or movement of a person or animal at a fast pace
verb
the act of moving swiftly on foot
adjective
having the ability to run or perform the act of running
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The athlete was training hard and focusing on improving her running technique.
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I saw John running in the park this morning, he's really dedicated to his fitness.
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I'm so out of shape, I can barely handle a short running session.
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The project is running smoothly, thanks to the efficient teamwork.