debt

nouns

the state of owing something (especially money)
"he is badly in debt"
is a type of (narrower)
an obligation to pay money to another party
money or goods or services owed by one person to another
is a type of (narrower)
anything that is owed to someone else
an obligation to pay or do something
is a type of (narrower)
a legal agreement specifying a payment or action and the penalty for failure to comply