Words with 'z' at the start and 'tec' at the end

In total, how many words are possible to make using this list?
You could assemble 2 words from the specified combination.

In Scrabble, what is the best score possible using this list of words that start with 'z' and end with 'tec'?
With sadly a small number of words available, you can only use 'zacatec' scoring 20 points.

Which word from this list has the highest letter count?
'zacatec'