7-Letter Words Matching J_____N

There are 12 7-letter words that match J_____N. 4 are common words, such as JAVELIN and JIGSAWN. A rarer one is JUNKMEN. In this set, A is the most frequent open letter (9 words). 4 words contain a doubled letter.

Full list 12

javelinjigsawnjurymanjurymenjazzmanjazzmenjillionjunkmanjacobinjalapinjargoonjunkmen

About this list

Words
12 (4 common words)
Common example
javelin
Rare example
junkmen
Doubled letters
4
Ending in S
0
Most frequent letter
A (9)

Questions

How many 7-letter words matching j_____n are there?

12. 4 of them are common words.

What is a common example?

JAVELIN is among the common words in this set.