Words with 'kwa' at the start and 'e' at the end

What's the biggest word you can make from words that start with 'kwa' and end with 'e'?
There are 7 characters in the word 'kwartje', that makes it the longest word we have.

What is the max number of words one can construct using this list?
There are 2 words.

In Scrabble, what is the highest score you can get using words beginning with 'kwa' and ending with 'e'?
As there is just offered, the only word you can play for is 'kwartje' scoring 21 points.