9-Letter Words Matching _S_____O_

There are 13 9-letter words that match _S_____O_. 8 are common words, such as ASCENSION and ASPERSION. A rarer one is OSTINATOS. In this set, A is the most frequent open letter (11 words). 3 words contain a doubled letter.

Full list 13

ascensionaspersionaspiratorassertionescalatorespressosestimatorisolationasyndetonestradiolpsalmbookpseudopodostinatos

About this list

Words
13 (8 common words)
Common example
ascension
Rare example
ostinatos
Doubled letters
3
Ending in S
2
Most frequent letter
A (11)

Questions

How many 9-letter words matching _s_____o_ are there?

13. 8 of them are common words.

What is a common example?

ASCENSION is among the common words in this set.