This document discusses commonly confused words in the English language. It identifies four main categories of confused words: 1) homophones that sound the same but have different meanings, 2) etymological/functional variations that come from the same root but have different parts of speech or meanings, 3) transcriptions of colloquialisms that are spelled how they sound in dialects but are different words, and 4) antonyms that are opposite in meaning but not spelling or pronunciation. Examples are provided for each category to illustrate words that are often mixed up.