9-Letter Words Matching __M_____M

There are 12 9-letter words that match __M_____M. 5 are common words, such as COMMUNISM and GYMNASIUM. A rarer one is SYMPODIUM. 4 words contain a doubled letter.

Full list 12

communismgymnasiummammogramsymbolismsymposiumbumbledomcommendamcymbiformmammonismvampirismcymbidiumsympodium

About this list

Words
12 (5 common words)
Common example
communism
Rare example
sympodium
Doubled letters
4
Ending in S
0

Questions

How many 9-letter words matching __m_____m are there?

12. 5 of them are common words.

What is a common example?

COMMUNISM is among the common words in this set.