10-Letter Words Matching _____N___M

There are 14 10-letter words that match _____N___M. 3 are common words, such as COMPENDIUM and LAWRENCIUM. A rarer one is PRESENTISM. In this set, I is the most frequent open letter (12 words). 1 words contain a doubled letter.

Full list 14

compendiumlawrenciummillenniumdiaconicumgormandismpanjandrumsporangiumsubkingdomsubminimumdisconfirmepidendrumnonconformoverinformpresentism

About this list

Words
14 (3 common words)
Common example
compendium
Rare example
presentism
Doubled letters
1
Ending in S
0
Most frequent letter
I (12)

Questions

How many 10-letter words matching _____n___m are there?

14. 3 of them are common words.

What is a common example?

COMPENDIUM is among the common words in this set.