8-Letter Words Matching _S___O__

There are 18 8-letter words that match _S___O__. 4 are common words, such as ASTEROID and ESCALOPS. A rarer one is TSARDOMS. 3 words contain a doubled letter.

Full list 18

asteroidescalopsescaroleusuriousescalopeisoglossisotropypsalmodyassurorsastomousestriolsisochoreisochorsisophoteisosporyisthmoidpsammonstsardoms

About this list

Words
18 (4 common words)
Common example
asteroid
Rare example
tsardoms
Doubled letters
3
Ending in S
9

Questions

How many 8-letter words matching _s___o__ are there?

18. 4 of them are common words.

What is a common example?

ASTEROID is among the common words in this set.