A contract of pledge is generally indivisible, hence partial payment does not lead to proportionate extinguishment of the pledge.
In legal pledge, the excess in the sale proceeds shall belong to the legal pledgor and the legal pledgee shall be entitled to recover in case of deficiency.
While a real estate mortgage requires registration in order to be valid, an unregistered real estate mortgage is binding between the contracting parties.
In judicial foreclosure of real estate mortgage, there is right of redemption and equity of redemption.
In chattel mortgage, there is equity of redemption which must be exercised before the foreclosure sale