9-Letter Words Matching ___N____M

There are 24 9-letter words that match ___N____M. 10 are common words, such as BARNSTORM and GYMNASIUM. A rarer one is BRONCHIUM. In this set, I is the most frequent open letter (20 words). 1 words contain a doubled letter.

Full list 24

barnstormgymnasiumhypnotismmagnesiummagnetismmannerismprincedomrainstormroundwormtransformaciniformatonalismblindwormclingfilmctenidiumeconomismflunkyismirenicismjointwormligniformphonogrampycnidiumrhinariumbronchium

About this list

Words
24 (10 common words)
Common example
barnstorm
Rare example
bronchium
Doubled letters
1
Ending in S
0
Most frequent letter
I (20)

Questions

How many 9-letter words matching ___n____m are there?

24. 10 of them are common words.

What is a common example?

BARNSTORM is among the common words in this set.