5-Letter Words Matching F_S__

There are 15 5-letter words that match F_S__. 9 are common words, such as FASTS and FESTS. A rarer one is FUSEL. In this set, S is the most frequent open letter (9 words). 5 words contain a doubled letter.

Full list 15

fastsfestsfishyfistsfusedfuseefusesfussyfustyfiscsfossafossefusilfessefusel

About this list

Words
15 (9 common words)
Common example
fasts
Rare example
fusel
Doubled letters
5
Ending in S
5
Most frequent letter
S (9)

Questions

How many 5-letter words matching f_s__ are there?

15. 9 of them are common words.

What is a common example?

FASTS is among the common words in this set.