Words with 'pun' at the start and 'u' at the end

In total, how many words could one make using these specific combinations of letters?
Sad to say you can only create 1 word.

In Scrabble, what is the highest possible score you can get from words beginning with 'pun' and ending with 'u'?
With a single word to choose from, you can only use the word 'punamu' scoring 10 points.