Words that start with 'auc' and contain 'n'

Which is the most unique word from this list?
One example of an unusual word from this page goes to 'auchenium'. The definition of 'auchenium' is as follows: "The part of the neck nearest the back.". Credit goes to Oxford Dictionary.

Which word from this list is made up of the largest number of characters?
'auctioneers', and consists of 11 letters.

What's the highest scoring word in Scrabble using the requested combination ?
Using this combination, you could play 'auckland' scoring 15 points in Scrabble.

Is there any word on this page that jumps out as the most popular?
There's 'auction', which ranks as the 19143^rd most common word.

What is the max number of words you could create from this list?
It is possible to create 13 words with the specified combination.