Main entry: run
Definition: be operating, running or functioning
Usage: The car is still running--turn it off!
Main entry: operate, run, work, go, function
Definition: perform as expected when applied
Usage: The washing machine won't go unless it's plugged in; Does this old car still run well?; This old radio doesn't work anymore
Antonyms: malfunction, misfunction
Definition: fail to function or function improperly