8-Letter Words Matching ____N__M

There are 51 8-letter words that match ____N__M. 22 are common words, such as ACTINIUM and ADDENDUM. A rarer one is TOMENTUM. In this set, I is the most frequent open letter (37 words). 6 words contain a doubled letter.

Full list 51

Common words

actiniumaddendumalbinismbienniumcementumcorundumfeminismgeraniumhedonismhumanismmomentumorganism
actiniumaddendumalbinismbienniumcementumcorundumfeminismgeraniumhedonismhumanismmomentumorganismpaganismperineumpleonasmpoloniumpudendumsatanismseleniumtitaniumtokenismunionismactinismalienismammoniumargentumdemonismdominiumhymeniumilliniumlaconismmelanismoogoniumpagandomqueendomramentumsyconiumurbanismveganismalpinismatheneumlomentumluminismmeconiummoronismpaeanismpeponiumsecundumspleniumtitanismtomentum

About this list

Words
51 (22 common words)
Common example
actinium
Rare example
tomentum
Doubled letters
6
Ending in S
0
Most frequent letter
I (37)

Questions

How many 8-letter words matching ____n__m are there?

51. 22 of them are common words.

What is a common example?

ACTINIUM is among the common words in this set.