15-Letter Words Matching N___________O__

There are 21 15-letter words that match N___________O__. 6 are common words, such as NATURALIZATIONS and NEUTRALIZATIONS. A rarer one is NOVEMDECILLIONS. In this set, I is the most frequent open letter (20 words). 4 words contain a doubled letter.

Full list 21

naturalizationsneutralizationsnoncontributorynoncooperationsnoninflammatorynonrecognitionsneurophysiologynitrochloroformneuropsychologyneurosecretionsnoncelebrationsnonconsumptionsnoncorrelationsnoncultivationsnondisjunctionsnonimplicationsnonimportationsnoninformationsnonsegregationsnonsimultaneousnovemdecillions

About this list

Words
21 (6 common words)
Common example
naturalizations
Rare example
novemdecillions
Doubled letters
4
Ending in S
16
Most frequent letter
I (20)

Questions

How many 15-letter words matching n___________o__ are there?

21. 6 of them are common words.

What is a common example?

NATURALIZATIONS is among the common words in this set.