15-Letter Words Matching _O_A___________

There are 14 15-letter words that match _O_A___________. 3 are common words, such as NONAVAILABILITY and TOTALITARIANISM. A rarer one is VOLATILIZATIONS. In this set, I is the most frequent open letter (14 words). 3 words contain a doubled letter.

Full list 14

nonavailabilitytotalitarianismvoraciousnesseslogarithmicallynonagriculturalnonachievementsnonadditivitiesnonantagonisticnonarchitecturenonaristocraticnonastronomicalromanticizationtotalitarianizevolatilizations

About this list

Words
14 (3 common words)
Common example
nonavailability
Rare example
volatilizations
Doubled letters
3
Ending in S
4
Most frequent letter
I (14)

Questions

How many 15-letter words matching _o_a___________ are there?

14. 3 of them are common words.

What is a common example?

NONAVAILABILITY is among the common words in this set.