| A | B |
| math/equivalents | solves basic math problems |
| phonebook | uses phone numbers to search for locations |
| spell checker | gives suggestions if the word keyed is spelled wrong |
| different language support | searches for words in different languages |
| boolean logic | uses operators to narrow search parameters |
| field | useful for drilling down and focusing |
| keyword | unique phrases or terms (search string) |
| subject directories | developed & maintained by humans |
| meta-search engine | duplications are eliminated |
| individual search engine | results are lists of web pages/titles |