The spelling of the word "causes disagree" can be a bit tricky due to the different pronunciation of the vowel sound in each word. "Causes" is pronounced as /ˈkɑzəz/, with a long /o/ sound, whereas "disagree" is pronounced as /ˌdɪsəˈɡriː/, with a long /i/ sound. The contrasting vowel sounds can make it easy to accidentally switch the order of the letters in these two words. It's important to pay attention to each individual sound to avoid misspelling this phrase.