10-Letter Words Matching A________A

There are 33 10-letter words that match A________A. 4 are common words, such as ACROPHOBIA and ANESTHESIA. A rarer one is ATHEROMATA. In this set, I is the most frequent open letter (25 words). 5 words contain a doubled letter.

Full list 33

Common words

acrophobiaanesthesiaarrhythmiaaspidistraadventitiaadversariaaerodontiaaerophagiaaerophobiaalcheringaalgolagniaalgophobia
acrophobiaanesthesiaarrhythmiaaspidistraadventitiaadversariaaerodontiaaerophagiaaerophobiaalcheringaalgolagniaalgophobiaamenorrheaanacoluthaantinauseaaphrodisiaarchegoniaarthralgiaasthenopiaautostradaaerenchymaaficionadaanalemmataanathemataanchovettaanimalculaantependiaantheridiaantianemiaantiasthmaasafoetidaaspergillaatheromata

About this list

Words
33 (4 common words)
Common example
acrophobia
Rare example
atheromata
Doubled letters
5
Ending in S
0
Most frequent letter
I (25)

Questions

How many 10-letter words matching a________a are there?

33. 4 of them are common words.

What is a common example?

ACROPHOBIA is among the common words in this set.