Cost per click (CPC)
Cost per click (CPC) is a metric for how much each click costs in a pay-per-click advertising campaign. Cost-per-click and pay-per-click are sometimes used interchangeably, but they’re actually two sides of the same coin. Pay-per-click is the type of ad model, and cost-per-click is the fee per click.
See Pay per click
Learn more:Understanding Facebook Ads Cost