Bond, indemnity (6)
I believe the answer is:
surety
I believe this is a double definition.
'bond' is the first definition.
(surety bond is a kind of bond)
'indemnity' is the second definition.
(thesaurus)
(Other definitions for surety that I've seen before include "One who takes responsibility for another's debts" , "Money given as guarantee of action" , "It's given as a guarantee that an obligation will be met" , "Guarantor" , "Safeguard; certainty" .)