km/hr is a kind of unit for representing speed
unit_of_velocity is unit_of_rate. unit_of_speed is not unit_of_rate. unit_of_speed is unit_of_measure. unit_of_angular_speed is unit_of_rate. kilometers_per_hour is rate. unit_of_speed is unit_of_rate. unit_of_speed is kilometers_per_hour. unit_of_speed is not kilometers_per_hour. unit_of_speed is not unit_of_measure. per_unit_time is unit_of_rate.