Words that contain 'z' and end in 'rd'

In total, how many words are possible to make using these specific combinations of letters?
You could make 31 words from the combination of words that have 'z' in and end with 'rd'.

What is the longest word you can make with this list?
The biggest word on this page is 'horizonward'. It is made up 11 letters.

What is the highest scoring word you can play in Scrabble ?
Using this combination of letters, one could play 'buzzword' which gets 32 points.

Which is the most unique word from this list?
One example of an uncommon word from this page goes to 'lizard'. The dictionary defines it as "1. (Zoöl.) Any one of the numerous species of reptiles belonging to the order Lacertilia; sometimes, also applied to reptiles of other orders, as the Hatteria. Note: Most lizards have an elongated body, with four legs, and a long tail; but there are some without legs, and some with...".

What is the most common word that has 'z' in and ends with 'rd'?
As far as well-known words go, there's 'hazard', which is the 10000^th most popular word.