Clouds are mainly classified into four categories:-
1. Cirrus Cloud:- These are thin and detached cloud generally having white in color and feathery appearance. These are formed at the high of 8000-12000m.
2. Cumulus:- Look like cotton wool and found at the height of 4000-7000m
3. Stratus:- These are layered cloud formed due to loss of heat.
4. Nimbus:-These are black or dark gray clouds found at middle levels or near the surface
Rain is classified into three categories:-
1. Convectional Rain:-
2. Orographic or Relief
3. Cyclonic or frontal