7-Letter Words Matching ____Z_N

There are 12 7-letter words that match ____Z_N. 5 are common words, such as BEDIZEN and CITIZEN. A rarer one is TRIAZIN. In this set, I is the most frequent open letter (8 words). 3 words contain a doubled letter.

Full list 12

bedizencitizendenizenhorizonmuezzincabezonhoatzinchazzanchazzenmenazonthiazintriazin

About this list

Words
12 (5 common words)
Common example
bedizen
Rare example
triazin
Doubled letters
3
Ending in S
0
Most frequent letter
I (8)

Questions

How many 7-letter words matching ____z_n are there?

12. 5 of them are common words.

What is a common example?

BEDIZEN is among the common words in this set.