9-Letter Words Matching __O_____A

There are 23 9-letter words that match __O_____A. 3 are common words, such as APOCRYPHA and PROSCENIA. A rarer one is STOMODAEA. In this set, I is the most frequent open letter (16 words). 3 words contain a doubled letter.

Full list 23

apocryphaprosceniapyorrhoeaapotheciachondromaesotericaesotropiafiorituramyocardiaomophagiaprotonemasporangiazoophobiaexodontiaglochidianeophilianeoplasiaprocambiapropylaeaprostomiascotomatastomodaeazoophilia

About this list

Words
23 (3 common words)
Common example
apocrypha
Rare example
stomodaea
Doubled letters
3
Ending in S
0
Most frequent letter
I (16)

Questions

How many 9-letter words matching __o_____a are there?

23. 3 of them are common words.

What is a common example?

APOCRYPHA is among the common words in this set.