Words with 'spe' at the start and 'n' at the end

In total, how many possible words can you make using the combination specified?
Altogether, there are 43 words.

What is the most popular word on this page?
The most popular word is 'specimen', which in fact is the 6627^th most common word in the dictionary.

What is the largest word you can derive from the combination of letters searched for?
The longest word assembled by Dictionarypedia is 'speechification'. It is made up 15 letters.

In Scrabble, what's the most points possible using words that start with 'spe' and end with 'n'?
From this combination of letters, the best word to play is 'speuchan' scoring 15 in Scrabble.

Which word from this list is the most unique?
The most strange word from this list is 'spellken'. According to the Oxford dictionary, 'spellken' is defined as "A theater. [Slang] Byron.".