Terms used in this chapter and chapter 54-8 are defined as follows, unless the context otherwise plainly requires:
(1) "Creditor," is one in whose favor an obligation exists by reason of which he is, or may become, entitled to the payment of money;
(2) "Debtor," one who, by reason of an existing obligation is, or may become liable to pay money to another, whether such liability is certain or contingent.