Clearing and Killing

https://wiki.polkadot.network/docs/en/learn-identity

Clearing: Users can clear their identity information and have their deposit returned. Clearing an identity also clears all sub accounts and returns their deposits.

Killing: The Council can kill an identity that it deems erroneous. This results in a slash of the deposit.

Clearing an identity

Clearing is done through the Extrinsics UI.