Words with 'gy' at the start and 'a' at the end

In Scrabble, what's the best score possible using words with 'gy' at the start and 'a' at the end?
You can make 'gymkhana' for a total score of 21 points in Scrabble.

Is there an example of a word from this page which might be considered as unique?
Our team considers 'gymnotoka' to be the most peculiar word. 'Gymnotoka''s definition is "The Athecata.", according to the English dictionary.

How many letters are in the biggest word on this list?
The longest word is 13 characters long, which is 'gynaecomastia'.

What is the max number of words one can assemble using this list?
There are 46 words available using words that start with 'gy' and end with 'a'.