This document discusses prefixes and suffixes, providing examples of common ones in English. It explains that prefixes are added to the beginning of words to change their meaning, while suffixes are added to the end and can change a word's part of speech. Tables are included listing example prefixes like "un-", "dis-", and "ex-" and their meanings, as well as suffixes like "-able", "-ness", and "-ly" and how they affect word definitions. The document encourages learning prefixes and suffixes to better understand new words.