13-Letter Words Matching B_____A______

There are 17 13-letter words that match B_____A______. 9 are common words, such as BACCALAUREATE and BACKSLAPPINGS. A rarer one is BREATHABILITY. In this set, I is the most frequent open letter (14 words). 6 words contain a doubled letter.

Full list 17

baccalaureatebackslappingsbisexualitiesbouillabaissebrainwashingsbreathalyzingbrilliantinesbrinkmanshipsbroadcastingsbelievabilitybreathalyzersbackscatteredbackstabbingsbiconcavitiesboardsailingsboulevardiersbreathability

About this list

Words
17 (9 common words)
Common example
baccalaureate
Rare example
breathability
Doubled letters
6
Ending in S
11
Most frequent letter
I (14)

Questions

How many 13-letter words matching b_____a______ are there?

17. 9 of them are common words.

What is a common example?

BACCALAUREATE is among the common words in this set.