surety
/ˈʃɚrəti/ /Brit ˈʃːrəti/
noun
plural -ties
[count] law :money that you give as a guarantee that you will do what you are legally required to do (such as to appear in court)
a surety
of $10,000 =
a $10,000 surety
bond
law :someone who agrees to be legally responsible if another person fails to pay a debt or to perform a duty [count]
[noncount] formal :the state of being or feeling sure or certain
US