Which word in particular from this list has the highest character count?The longest word is 19 characters, which is 'quattuordecillionth'.
What's the highest scoring word in Scrabble with the above combination ?For 20 points in Scrabble, one could use 'dozenth'.
What's an interesting word from this list?By far the most strange word in this list is 'hydranth'. The dictionary defines it as "One of the nutritive zooids of a hydroid colony. Also applied to the proboscis or manubrium of a hydroid medusa. See Illust. Of Hydroidea.".
How many words are possible to make using the combination specified?You can go with up to 17 entries.