: A search engine is a tool used to search, locate and access websites
on the Internet.
Browsers can go to a search engine, enter key words or key phrases, and the search engine will generate a SERP with clickable links that correspond to the query terms.
There are dozens of popular search engines available to web surfers including Google.com, Yahoo.com, MSN.com, and Ask.com.
See also vertical search, PageRank, organic search results, algorithm, and address.