Words with 'v' as the first letter that end with 'a'

In Scrabble, what's the best score you can get from words that start with 'v' and end with 'a'?
With an enormous 280 entries, your best option is 'vizcacha' scoring 27 points.

What's the maximum number of words one is able to assemble from this list?
You can choose from a maximum of 280 entries.

Is there an example of a word from this page that could be thought of as unique in any regard?
Undeniably one of the most strange words from this list of words that start with 'v' and end with 'a' is 'valvula'. It is defined as "A little valve or fold; a valvelet; a valvule.".

Which word that starts with 'v' and ends with 'a' is the most popular word in the dictionary?
'Va' is the most well-known word from this list, ranked 4889^th most common word.

How many characters does the longest word from this list consist of?
The word 'villiplacentalia' has 16 characters.