A simple Google search of "what is" followed by the listed terms will give you comprehensive answers.
The context of how they apply to our case is what's really important for understanding the issues.
The estate potentially has Billions in Assets that were protected by Safe Harbor from seizure and sale to JPM.
The Equity that WMI owned in WMB was abandoned and this act is what produced the NOL value for WMIH.
The Equity Interest of WMI is owned by those who released, while those of WMIIC is owned by the Newco,..WMIH.
The Retained Earnings was the cash benefits that WMI reported from the sale of MBS's and interests in Trusts.
The Retained Assets would be the actual assets that WMI retained for income generation, such as Trading Assets and Available For Sale Securities.
These Retained Assets as related to us would be the percentages that were retained in the Trusts and/or other Assets that have continued to perform over the past 9 years.
Escrow Returns: $2-$10 Billion