Words with 'zi' at the start and 'p' at the end

How many words could one put together using the specified combination?
On this page of words beginning with 'zi' and ending with 'p', there is solely 1 combination that can be selected.

What is the highest scoring word you can play in Scrabble ?
As there is just 1 combination possible, you're forced to select 'zip' which scores 14 points.