15-Letter Words Matching _____NG________

There are 12 15-letter words that match _____NG________. 3 are common words, such as CONSANGUINITIES and DISTINGUISHABLE. A rarer one is UNCHANGEABILITY. In this set, I is the most frequent open letter (12 words). 3 words contain a doubled letter.

Full list 12

consanguinitiesdistinguishablemeaninglessnessdistinguishablysalpingectomiescholangiographyexchangeabilityoverengineeringoveringenuitiesrefrangiblenesssporangiophoresunchangeability

About this list

Words
12 (3 common words)
Common example
consanguinities
Rare example
unchangeability
Doubled letters
3
Ending in S
6
Most frequent letter
I (12)

Questions

How many 15-letter words matching _____ng________ are there?

12. 3 of them are common words.

What is a common example?

CONSANGUINITIES is among the common words in this set.