Spider , Index , Search and retrieval mechanism.
The crawler The index The search engine software
The two main components of a search engine are the crawler (or spider) and the indexer. The crawler systematically browses the web to collect data from web pages, while the indexer organizes and stores this information in a searchable format. Together, these components enable the search engine to quickly retrieve relevant results in response to user queries.
The three popular search engine are google, yahoo and bing. These are the 3 major player http://www.thinkbigsites.com
spider, indexer, and search engine software.
www.google.comwww.yahoo.comhttp://www.answers.com
www.1337x.com is torrent search engine and has three trackers
Universal Search Engine: These are search engines which can search anything on the web whether it is news, maps, videos, images, websites, or books (etc.). Google, Yahoo & Bing are the three prime universal (web) search engines.
to another search engine to another search engine to another search engine to another search engine to another search engine
ummm, what?
Pottermore does not have a search engine.
Google is a search engine because it has a lot of websites. It is a very good search engine.
AltaVista is a web search engine owned by Yahoo.