Native Advertising is “Pay to Play” on others’ platforms. The content usually consists of advertising in disguise. Content Marketing, on the other hand, is legitimate stand-alone content that the target market wants or needs, and for many businesses, it is often answering a question or helping the customer to solve a problem. It is typically built on its own platform.
http://contentmarketinginstitute.com/2015/08/native-advertising-content-marketing/