A textonym is a word that comes out of your phone's predictive text when you meant a different word. On old phones with number keys, each key carried three or four letters, so one sequence of presses could produce several different words — press 4-6-6-3 and the phone might give you 'good', 'gone', 'home' or 'hood'. Those words are textonyms of each other, and the wrong one arriving in your friend's message was a daily comedy. The word is a noun, and it is uncommon: you will see it in newspaper articles about phones, in word-game writing and in puzzles, but most people who make the mistake have no name for it. Since smartphones replaced number keys, the old cause has mostly gone, but the idea lives on with autocorrect, where the phone still confidently hands you a word you never meant.

選字誤字（九宮格按鍵手機上同一組數字對應到不同的字，選錯的那個）