How Many Kinds of Hadath are There?

There are two kinds of hadath:

(a) Minor hadath: It is the state of hadath that is eliminated by making wudu. Wudu is invalidated when when blood flows from an organ like the mouth and nose, etc; and the state of minor hadath occurs. Wudu is enough to end the state of minor hadath. 

(b) Major hadath: It is the state of hadath that occurs due to janabah, menstruation and puerperium; it can be eliminated only by ghusl.