OR, so religious beliefs may be treated as religious OR beliefs. By combining Boolean words with parenthesis, you can perform multiple tasks at once. Searches on the root of the word by adding different word endings or plurals. Searches a phrase or words that have a unique meaning when linked. If you misspell a keyword, your results will contain only websites where that word is also misspelled.
Subject directories are best for browsing and for searches of a more general nature.
When you want to see what is available in your subject area, go to a directory and browse through subject categories. Subject directories are good for finding specific information on popular topics such as a favorite sport or an airline schedule. Search engines are best at finding keywords, phrases, quotes, and information buried in the text of web pages. Use a search engine when your search is narrow and well defined. Use a meta-search engine when you are in a hurry.