The term 'homophonic' is a 10-letter word that means having the same sound. It is a type of homonym, which is a word that has the same spelling and pronunciation as another word but has a different meaning. Homophonic words are often used in poetry and literature to create a certain effect or to emphasize a point. For example, the phrase 'the wind blew' can be homophonic with 'the wind blew' to emphasize the power of the wind.