The word "cay use" is an incorrect spelling of "chaos". The correct pronunciation of "chaos" is /ˈkeɪ.ɑːs/ with the stress on the first syllable. The "ch" sound is spelled with the letters "ch" in English, despite being pronounced differently in other languages such as Spanish or German. The mistake of spelling "chaos" as "cay use" may have been caused by confusion with the phonetic transcription of the word, which uses the symbol /k/ for the "ch" sound.