This video explains what heteronyms are, these are words that are spelled the same, but pronounced differently. For examples, as a noun, dove is a type of bird. As a verb, dove is the past tense of dive. The difference usually comes because it is a different part of speech and the emphasis is on a different syllable. Video is a great introduction or review of heteronyms. Video gives many examples to make the concept clear. A full transcript of the video is available from RachelEnglish.com. (2:51)