|Search Engine||Web Directory|
|It uses programs like robots,crawlers or spiders which gives the results for your searches.||It is human powered, Site owners submit their sites to directories and determine which site to be include in directory.|
|Search engines don't have any category specific page.||
Search directories have different specified categories where users can search URLs and links.
|Examples: Google, Bing, Yahoo, Ask.com, Baidu, AOl.com, DuckDuckGo, Wolframalpha etc.||Examples: dmoz.org, ii.org , business.com, botw.org,sunsteam.com etc.|