5-Letter Words Matching A_S__

There are 12 5-letter words that match A_S__. 6 are common words, such as AISLE and APSES. A rarer one is ARSES. In this set, S is the most frequent open letter (8 words). 4 words contain a doubled letter.

Full list 12

aisleapsesarsonassayassesassetapsisarsedarsisassaiansaearses

About this list

Words
12 (6 common words)
Common example
aisle
Rare example
arses
Doubled letters
4
Ending in S
5
Most frequent letter
S (8)

Questions

How many 5-letter words matching a_s__ are there?

12. 6 of them are common words.

What is a common example?

AISLE is among the common words in this set.