How many characters does the longest word from this list consist of?The largest word is 6 letters long, which is 'cauqui'.
How many usable words are possible to make using the specified combination?There are 2 words you could choose for words that have 'au' in and end with 'ui'.
What is the highest scoring word in Scrabble available on this page ?With sadly very little words offered, the only option you can go for is 'cauqui' for a score of 17 points.