10-Letter Words Matching ____O____M

There are 31 10-letter words that match ____O____M. 12 are common words, such as ANGIOSPERM and COLLOQUIUM. A rarer one is WARLORDISM. In this set, R is the most frequent open letter (25 words). 4 words contain a doubled letter.

Full list 31

Common words

angiospermcolloquiumconformismconsortiumecotourismgymnospermiconoclasmopprobriumpetrolatumprotoplasmschoolmarmschoolroom
angiospermcolloquiumconformismconsortiumecotourismgymnospermiconoclasmopprobriumpetrolatumprotoplasmschoolmarmschoolroomandroeciumarchoplasmdeutoplasmdiaconicumhomeothermhyaloplasmkaryoplasmmicroseismperiosteumprimordiumprotoxylemseaborgiumdisconfirmmicroprismnonconformsarcoplasmstenothermstomodaeumwarlordism

About this list

Words
31 (12 common words)
Common example
angiosperm
Rare example
warlordism
Doubled letters
4
Ending in S
0
Most frequent letter
R (25)

Questions

How many 10-letter words matching ____o____m are there?

31. 12 of them are common words.

What is a common example?

ANGIOSPERM is among the common words in this set.