The document discusses prefixes and suffixes. It provides examples of negative prefixes like "dis-", "de-", "il-", "ir-", "un-", "im-", and "in-" and how they convey a sense of negation when added to words. It also discusses suffixes like "-en" that can be added to adjectives to form verbs, and suffixes like "-ion", "-tion", "-ation" that can be added to verbs to form nouns. The document includes practice problems where the reader is asked to identify prefixes and suffixes in example words.