When a search engine returns its search results, it gives you two types: organic and paid. Organic search results are the Web page listings that most closely match the user's search query based on relevance. ... A results page from Google and Yahoo! with organic and paid results highlighted.

you can rank your site on google through Paid search

Also called “natural” search results, ranking high in the organic results is what SEO is all about. ... A results page from Google and Yahoo! with organic and paid results highlighted.