Usually a lender obtains a security interest from a borrower who mortgages or pledges an asset like a house to secure the loan. If the borrower defaults and the lender tries to repossess the property, courts of equity can grant the borrower the equitable right of redemption if the borrower repays the debt. While this equitable right exists, it is a cloud on title and the lender cannot be sure that (s)he can successfully repossess the property. Therefore, through the process of foreclosure, the lender seeks to foreclose the equitable right of redemption and take both legal and equitable title to the property in fee simple. Other lien holders can also foreclose the owner's right of redemption for other debts, such as for overdue taxes, unpaid contractors' bills or overdue homeowners' association dues or assessments.
It has nothing to do with short sales or selling of a property.
Hope this helps with your question.
This is called a Shortsale.
Pre-forclosure is bad name for it, because if they are successful, they are avoiding Foreclosure:
Realtors do not use the term PRE-FORECLOSURE.