10-Letter Words Matching B________M

There are 12 10-letter words that match B________M. 2 are common words, such as BRAINSTORM and BRIDEGROOM. A rarer one is BOURBONISM. 4 words contain a doubled letter.

Full list 12

brainstormbridegroombaculiformbellbottombelletrismbibliofilmbipedalismblastodermbolshevismboosterismbowdlerismbourbonism

About this list

Words
12 (2 common words)
Common example
brainstorm
Rare example
bourbonism
Doubled letters
4
Ending in S
0

Questions

How many 10-letter words matching b________m are there?

12. 2 of them are common words.

What is a common example?

BRAINSTORM is among the common words in this set.