Words with 'h' as the first letter that end with 'dra'

What is an interesting word from this page?
You'll notice a number of interesting words on this page, however our favorite word is 'hydra'. The definition of 'hydra' is as follows: "1. (Class. Myth.) A serpent or monster in the lake or marsh of Lerna, in the Peloponnesus, represented as having many heads, one of which, when cut off, was immediately succeeded by two others, unless the wound was cauterized. It was slain by Hercules. Hence, a terrible monster. Gorgons,...".

What's the total number of words you are able to assemble using this combination of letters?
On this list of words that start with 'h' and end with 'dra', there are 7 outstanding entries which are possible.

What's the longest word you can make from words that start with 'h' and end with 'dra'?
The word 'hendecahedra' contains 12 characters.

Which word on this page is the most common?
The most common word in this list is 'hydra', which in fact is the 78242^nd most common word in the dictionary.

In Scrabble, what's the best score you can get using words with 'h' as the first letter that end with 'dra'?
For a total of 17 points in Scrabble, you are able to use 'hexdra'.