Words that contain 'rv' and end in 's'

In total, how many words can one make using the combination requested?
There are 332 words for you to consider.

How many characters are in the longest word from this list?
'hyperconservativeness', and consists of 21 characters.

Is there an example of a word from this page that could be considered as unusual?
You'll notice numerous unusual words in this list, having said that our favorite word is 'nervousness'. The dictionary defines it as "State or quality of being nervous.".

What's the most common word that has 'rv' in and ends with 's'?
Rating as the 1644^th most popular word, you'll want to ensure you have 'servants' memorized.

What is the highest scoring word in Scrabble available from this list ?
As there are a sizeable 332 entries, you may want to select 'cervixes' scoring 20 points in total.