9-Letter Words Matching _____N__N

There are 18 9-letter words that match _____N__N. 8 are common words, such as AFTERNOON and AMAZONIAN. A rarer one is VULCANIAN. In this set, O is the most frequent open letter (17 words). 3 words contain a doubled letter.

Full list 18

afternoonamazonianbadmintoncommunioncompaniondraconianforeknownunbeknownantiunionchelonianchthoniancarbanioncolcannongorgonianphelonionplutoniantretinoinvulcanian

About this list

Words
18 (8 common words)
Common example
afternoon
Rare example
vulcanian
Doubled letters
3
Ending in S
0
Most frequent letter
O (17)

Questions

How many 9-letter words matching _____n__n are there?

18. 8 of them are common words.

What is a common example?

AFTERNOON is among the common words in this set.