9-Letter Words Matching ____K___N

There are 14 9-letter words that match ____K___N. 7 are common words, such as BREAKDOWN and BREAKEVEN. A rarer one is CYTOKININ. In this set, R is the most frequent open letter (10 words). 1 words contain a doubled letter.

Full list 14

breakdownbreakevencrackdownforeknownknockdownsharkskinunbeknownbrickkilncheckreinchinkapincracksmancracksmenstinkhorncytokinin

About this list

Words
14 (7 common words)
Common example
breakdown
Rare example
cytokinin
Doubled letters
1
Ending in S
0
Most frequent letter
R (10)

Questions

How many 9-letter words matching ____k___n are there?

14. 7 of them are common words.

What is a common example?

BREAKDOWN is among the common words in this set.