Definition of "driving hard" as it relates to oil changes.

[ZeeBabar]

I get confused with what it means. Is someone who does not race, does not start the car more than 4-5 times a day (daily driving) and only goes fast on open and empty highways (90-120 mph) considered as "driving hard"?

Is someone who does not go over 50 mph in weeks, does not indulge in jack rabbit starts but the route has several traffic lights and stop signs each day, would that be considered "driving hard" and need quicker oil changes?

Or is driving hard a term only used when some takes it to the track or takes off at every traffic light, brakes hard, drifts and such?