There are three components of a point spread wager: Taking the early example, if Oklahoma beats Kansas 51-21, a 30-point margin, Kansas would be a heavy loser but cover the spread.
Where a moneyline bet involves picking one team to win outright (or a draw when offered as a potential outcome), the losing team in a point spread bet may still provide a win for bettors, depending on the score of the sporting event. That means a bet for $110 would win $100, or $11 would win $10, and so on.