Words that contain 's' and end in 'des'

How many viable words can you put together with this combination of letters?
You could make 173 words altogether.

How many characters does the biggest word on this list contain?
The longest word that's possible to derive from the combination specified is 'platysmamyoides', which has 15 letters.

What's an unusual word from this page of words that have 's' in and end with 'des'?
One of the most strange words from this list is 'steganopodes'. 'Steganopodes''s definition is "A division of swimming birds in which all four toes are united by a broad web. It includes the pelicans, cormorants, gannets, and others.", according to the English dictionary.

In Scrabble, what's the highest score possible from this list of words containing 's' and ending with 'des'?
With a vast 173 entries, your best bet is to choose 'waysides' which scores 15 points in total.

What's the most common word for this page?
Rating as the 1379^th most common word, you will want to make sure you have 'besides' memorized.