A system error causes the change of Sumit net banking password. To sort this out, he calls the customer care. The following is the conversation he has with the executive:

Sumit: My password is changed.
Custom Care Executive: We have kept your password distinct this time. It has 8 letters out of which, 3 letters are same as previous.
Sumit: Okay, thanks.

Can you determine the old as well as the new password of Sumit net banking account after reading the conversation carefully?

The original password was "changed" and the new password given by custom care executive is "distinct".