1. A method for converting a string of characters in an initial writing system into a converted string of characters in a Japanese writing system, the method comprising the steps of: identifying a set of words in the Japanese language that are associated with a shared display in the Japanese writing system and are associated with a shared reading in the initial writing system, but are associated with different parts-of-speech; creating a cluster associated with the words in the set of words, the cluster indicating the parts-of-speech associated with the words in the set of words; using the cluster in a process to convert the string of characters in the initial writing system into the converted string of characters in the Japanese writing system.