As used in this article:
(a) "Premarital agreement" means an agreement between prospective spouses made in contemplation of marriage and to be effective upon marriage and includes the definition of the term prenuptial agreement as set forth in §48-1-203 of this code.
(b) "Property" means an interest, present or future, legal or equitable, vested or contingent, in real or personal property including income and earnings.