15-Letter Words Matching ____N_______N__

There are 16 15-letter words that match ____N_______N__. 5 are common words, such as DISENCHANTMENTS and GEOENGINEERINGS. A rarer one is ORGANOCHLORINES. 5 words contain a doubled letter.

Full list 16

disenchantmentsgeoengineeringsgroundbreakingsnoninterferencerelinquishmentsbioengineeringsarrondissementsdemonstrationalextinguishmentsimmunoblottingsnonenforcementsnonengineeringsnonindependencenoninflectionalnoninvolvementsorganochlorines

About this list

Words
16 (5 common words)
Common example
disenchantments
Rare example
organochlorines
Doubled letters
5
Ending in S
12

Questions

How many 15-letter words matching ____n_______n__ are there?

16. 5 of them are common words.

What is a common example?

DISENCHANTMENTS is among the common words in this set.