Can you mention the difference between SEO and SEM?

[lavyhair]

Can you mention the difference between SEO and SEM?

[sadianisar]

SEO: Search engine optimization. It is a technique which is used to optimize a website according to the guidelines of search engines.
SEM: Search engine marketing: It is a paid technique which is used to promote a website on the top of SERP by paying to search engines.

[Archana]

The full form of seo is search engine and optimization.It is free of cost method of website promotion.On the other hand SEM stands for search media optimization it includes paid techniques like ppc,cpc.