Can you mention the difference between SEO and SEM?
SEO is a component of search engine marketing.
SEM includes paid search, such as PPC and also SMM.
SEO is a type of SEM that helps to optimize webpages and rank them in search engines.
SEO is to rank website in search engine.
SEM is getting traffic, paid and unpaid from search engine.
SEO gives organic search results.
SEM gives paid search results.