stephanhodges - word frequency sorting requires us to find a usable word frequency list, though, which has proven elusive so far.
HW60 - well take 雨 for example; 雨伞 "umbrella" is one of the most common words containing 雨, but 伞 isn't a very common character outside of that one word, certainly a lot less common than many of the other characters that turn up in much more obscure 雨 compounds - 雨带, 雨集, 雨景, 雨立, just to name four from the ABC 雨 compounds list. Very common characters often turn up in some very uncommon words.
HW60 - well take 雨 for example; 雨伞 "umbrella" is one of the most common words containing 雨, but 伞 isn't a very common character outside of that one word, certainly a lot less common than many of the other characters that turn up in much more obscure 雨 compounds - 雨带, 雨集, 雨景, 雨立, just to name four from the ABC 雨 compounds list. Very common characters often turn up in some very uncommon words.