I'm doing an assignment in automotive engineering, and I need to find some information on oil and lubes.

All I know so far is:

The greasing and lubrication of the suspension system, the drive train and other general parts of a vehicle. A total lube job should be performed professionally once or twice a year and can easily be done when a vehicle's oil is changed.

What are "other general parts of a vehicle"? do they mean things like door hinges, etc?

Thanks.