8-Letter Words Matching ___O___A

There are 42 8-letter words that match ___O___A. 11 are common words, such as ARBORETA and AUTOMATA. A rarer one is ZYGOMATA. In this set, I is the most frequent open letter (22 words). 1 words contain a doubled letter.

Full list 42

Common words

arboretaautomatainsomniamaiolicamajolicamazourkapanoramascrofulasemolinasenoritaveronicacelomata
arboretaautomatainsomniamaiolicamajolicamazourkapanoramascrofulasemolinasenoritaveronicacelomatajaponicamesogleasayonarastrobilastrontiathioureaabdominaagnominaanoopsiaarmonicaatrophiacaponatachloasmacocobolacolobomaendosteagliomatagynoeciahyponoiahypopnealevodopalipomatamelodicamyxomatapeponidastromatathiotepatokonomayokozunazygomata

About this list

Words
42 (11 common words)
Common example
arboreta
Rare example
zygomata
Doubled letters
1
Ending in S
0
Most frequent letter
I (22)

Questions

How many 8-letter words matching ___o___a are there?

42. 11 of them are common words.

What is a common example?

ARBORETA is among the common words in this set.