A search engine is just another type of computer software (more or less) used to index web pages based on a quick scan of the contents of each page in a database.
Ngokuyinhloko, injini yokusesha ingenye uhlobo lwekhompyutha yekhompyutha (okungaphezulu noma ngaphansi) esebenza ukukhomba amakhasi wewebhu ibe yindawo egciniwe esekelwe ukuskena okusheshayo kokuqukethwe kwekhasi ngalinye.