ReDomain
ReDomain is a process for recycling domains you no longer need. The holder hands the domain over via an auth code; if it is sold successfully, they share in the proceeds. The transfer is irreversible.
How it differs: ReDomain is the giving-up side, ReCatch the taking-over side of the same cycle.
Example: instead of letting an unused domain lapse, the holder hands it over via ReDomain and keeps a chance at a share of the proceeds.