Words that start with 'o' and contain 'des'

How many letters does the longest word from this page contain?
The longest word is 19 characters long, which is 'overdescriptiveness'.

What is the most popular word for this page?
The most common word is 'oldest', which is in fact the 6260^th most common word in the dictionary.

Which word from this page is the most unique?
The most strange word based on a recent poll is 'overmodest'. The definition of 'overmodest' is as follows: "Modest to excess; bashful. -- O"ver*mod"est*ly, adv.". Source Cambridge Dictionary.

In Scrabble, what's the highest score you can get from this list of words starting with 'o' that contain 'des'?
You can make 'ozonides' for a total of 18 points.

What's the max number of words you're able to create using this list?
From this page of words that start with 'o' and contain 'des', there are 48 outstanding entries which can be selected.