Words that contain 'y' and end in 'x'

Which word that has 'y' in and ends with 'x' is most common in the English dictionary?
We've identified that syntax is the 39967^th most common word.

Is there an example of a word from this page that could be considered as unusual?
Our team considers bostryx is the most interesting word you can put together. The definition of bostryx is as follows: "A form of cymose inflorescence with all the flowers on one side of the rachis, usually causing it to curl; -- called also a uniparous helicoid cyme."Credit to the Cambridge Dictionary

In Scrabble, what is the highest number of points you can get using this list of words that contain 'y' and end in 'x'?
With the amount of words to select from, your best bet is to go for jasponyx which scores 27 points overall.

Which word from this list has the largest character count?
hydropneumothorax, and consists of 17 characters.

In total, how many words are available using these particular combinations of letters?
It is possible to assemble 119 words using the specified letter combination.