10-Letter Words Matching _____SK___

There are 13 10-letter words that match _____SK___. 6 are common words, such as CHEAPSKATE and MOLLUSKANS. A rarer one is SNAKESKINS. In this set, I is the most frequent open letter (11 words). 3 words contain a doubled letter.

Full list 13

cheapskatemolluskansonionskinssharkskinssheepskinsunderskirtsamarskitekazatskieskolinskiesouttaskingperovskitescarfskinssnakeskins

About this list

Words
13 (6 common words)
Common example
cheapskate
Rare example
snakeskins
Doubled letters
3
Ending in S
8
Most frequent letter
I (11)

Questions

How many 10-letter words matching _____sk___ are there?

13. 6 of them are common words.

What is a common example?

CHEAPSKATE is among the common words in this set.