What are the general classification of ointments and their sub-classification?

Classified according to the ointment bases

1. Oleaginous bases ointments eg: hydrocarbon bases like soft & hard paraffin, ceresine, animal & vegitable oil bases

2. Absorption bases eg: beeswax, woolfat

3. Water soluable bases eg: macrogols

4. Emulsifying bases eg: emulsifying wax