11-Letter Words Matching _A________A

There are 20 11-letter words that match _A________A. 6 are common words, such as BACCHANALIA and CARCINOMATA. A rarer one is SANSEVIERIA. In this set, I is the most frequent open letter (16 words). 6 words contain a doubled letter.

Full list 20

bacchanaliacarcinomatafashionistahaemophiliapachysandratachycardiacalceolarialalapaloozamalonylureamantellettamaquiladoraparagraphiaparesthesiaparonomasiapassacagliasanguinariabacteriuriapapillomatasaltimboccasansevieria

About this list

Words
20 (6 common words)
Common example
bacchanalia
Rare example
sansevieria
Doubled letters
6
Ending in S
0
Most frequent letter
I (16)

Questions

How many 11-letter words matching _a________a are there?

20. 6 of them are common words.

What is a common example?

BACCHANALIA is among the common words in this set.