7-Letter Words Matching ___M_O_

There are 20 7-letter words that match ___M_O_. 7 are common words, such as BOOMBOX and CRAMPON. A rarer one is SHAMMOS. In this set, S is the most frequent open letter (13 words). 6 words contain a doubled letter.

Full list 20

boomboxcramponcrimsonflummoxpalmtopshampooslumdogfermionfilmdomplumcotsjambokspambotstemsoncrambosdaimiosdaimyosplimsolpsammonschmoosshammos

About this list

Words
20 (7 common words)
Common example
boombox
Rare example
shammos
Doubled letters
6
Ending in S
5
Most frequent letter
S (13)

Questions

How many 7-letter words matching ___m_o_ are there?

20. 7 of them are common words.

What is a common example?

BOOMBOX is among the common words in this set.