15-Letter Words Matching I___________O__

There are 19 15-letter words that match I___________O__. 5 are common words, such as IDENTIFICATIONS and IMMOBILIZATIONS. A rarer one is INTERMEDIATIONS. In this set, N is the most frequent open letter (19 words). 7 words contain a doubled letter.

Full list 19

identificationsimmobilizationsimplementationsindoctrinationsinterpretationsincoordinationsinfundibuliforminitializationsintercommunionsinterpellationsillegalizationsimmunopathologyincapacitationsindigenizationsinteranimationsinterdiffusionsintergradationsinterlineationsintermediations

About this list

Words
19 (5 common words)
Common example
identifications
Rare example
intermediations
Doubled letters
7
Ending in S
17
Most frequent letter
N (19)

Questions

How many 15-letter words matching i___________o__ are there?

19. 5 of them are common words.

What is a common example?

IDENTIFICATIONS is among the common words in this set.