4-Letter Words Matching C_S_

There are 15 4-letter words that match C_S_. 9 are common words, such as CASE and CASH. A rarer one is CUSK. In this set, A is the most frequent open letter (5 words). 3 words contain a doubled letter.

Full list 15

casecashcaskcastcostcosycuspcusscystcasacesscistcoshcosscusk

About this list

Words
15 (9 common words)
Common example
case
Rare example
cusk
Doubled letters
3
Ending in S
3
Most frequent letter
A (5)

Questions

How many 4-letter words matching c_s_ are there?

15. 9 of them are common words.

What is a common example?

CASE is among the common words in this set.