What is the difference between holding current and latching current of SCR ?

Holding current	Latching current
Holding current is associated with turn-off process of SCR	Latching current is associated with turn-on process of SCR
Thyristor can be turned-off or returned to forward blocking state only if the forward current falls below a low level current called the holding current.	It is the minimum value of anode current Which it must attain during turn-on process to maintain conduction when gate pulse is removed.
Holding current is less than the latching current.	Latching current is the 2 to 3 times of holding current.