Difference between PPC and affiliate

PPC: PPC is an advertising service offered by search engines enabling merchants to advertise on a search engine result page.PPC is just what it says, you get paid for each qualified click of a banner or ad you place on your website, whereas Affiliate marketing generally pays you a commission based on sales resulting from a click from your website.

Affiliate: It is a popular Internet marketing strategy where a business offers a commission, based on sales or acquisition, to affiliates promoting their services/products and referring traffic.Affiliate marketing is the practice of a merchant providing a referral fee to individuals that promote a successful sale of a product / service, survey submission, newsletter sign up or any other service a business sells with the help of affiliates.