how long something takes is a kind of measurement of time
hourglass is way_to_measure_time. time_interval is measure. time_unit is measure. unit_of_time is unit_of_measure. one_unit_of_time is minute. hourglass is way_of_measuring_time. time is measurement. mean_time is time_unit. week is measurement_of_time. time is way_to_measure_movement.