6-Letter Words Matching ___S_M

There are 12 6-letter words that match ___S_M. 8 are common words, such as BALSAM and GYPSUM. A rarer one is SENSUM. In this set, O is the most frequent open letter (7 words). 3 words contain a doubled letter.

Full list 12

balsamgypsumhansomjetsamlissompassimpossumransomdorsumomasumjetsomsensum

About this list

Words
12 (8 common words)
Common example
balsam
Rare example
sensum
Doubled letters
3
Ending in S
0
Most frequent letter
O (7)

Questions

How many 6-letter words matching ___s_m are there?

12. 8 of them are common words.

What is a common example?

BALSAM is among the common words in this set.