The document discusses homophones and homographs. Homophones are words that have the same pronunciation but different meanings or spellings, like new and knew. Homographs are words that are spelled the same but have different meanings or pronunciations. Examples of homographs that are pronounced the same (homonyms) are present, desert, and close. Examples of homographs pronounced differently (heteronyms) are present, desert, and close. The document provides an activity for readers to identify homophones and determine the correct meaning of homographs in sample sentences.