12-Letter Words Matching __C________M

There are 13 12-letter words that match __C________M. 4 are common words, such as BICAMERALISM and FACTIONALISM. A rarer one is SYCOPHANTISM. In this set, I is the most frequent open letter (13 words). 1 words contain a doubled letter.

Full list 13

bicameralismfactionalismsectarianismsectionalismdichromatismincendiarismmicroprogramnecrophilismnoctambulismsecessionismarchesporiumpictorialismsycophantism

About this list

Words
13 (4 common words)
Common example
bicameralism
Rare example
sycophantism
Doubled letters
1
Ending in S
0
Most frequent letter
I (13)

Questions

How many 12-letter words matching __c________m are there?

13. 4 of them are common words.

What is a common example?

BICAMERALISM is among the common words in this set.