14-Letter Words Matching ____A___B_____

There are 16 14-letter words that match ____A___B_____. 5 are common words, such as IMPLAUSIBILITY and INFLAMMABILITY. A rarer one is UPGRADEABILITY. In this set, I is the most frequent open letter (16 words). 5 words contain a doubled letter.

Full list 16

implausibilityinflammabilityintractabilityunavailabilityunflappabilityinfrangibilitysustainabilitywarrantabilityalloantibodiesautoantibodiescollapsibilityextractabilityrefrangibilitysalvageabilitysubmandibularsupgradeability

About this list

Words
16 (5 common words)
Common example
implausibility
Rare example
upgradeability
Doubled letters
5
Ending in S
3
Most frequent letter
I (16)

Questions

How many 14-letter words matching ____a___b_____ are there?

16. 5 of them are common words.

What is a common example?

IMPLAUSIBILITY is among the common words in this set.