For example volume, velocity, Pressure etc.
Nonetheless, prefixes for the unit of mass are determined as if the gram were the base unit.
Fundamental quantities are not defined of other physical quantities, e.
S system is used in Britain, where length is measured in Foots, mass in pounds and time in Seconds.
This is because their dimensions and units are usually derived from the fundamental ones.
You do however need to know how they come about.