7-Letter Words Matching O____M_

There are 12 7-letter words that match O____M_. 5 are common words, such as ONETIME and ORGASMS. A rarer one is OXYSOME. 2 words contain a doubled letter.

Full list 12

onetimeorgasmsorigamiosmiumsoutcomeosteomaobiismsofframpogrismsoilcampoutjumpoxysome

About this list

Words
12 (5 common words)
Common example
onetime
Rare example
oxysome
Doubled letters
2
Ending in S
4

Questions

How many 7-letter words matching o____m_ are there?

12. 5 of them are common words.

What is a common example?

ONETIME is among the common words in this set.