14-Letter Words Matching ______O___S___

There are 18 14-letter words that match ______O___S___. 3 are common words, such as TELEPROCESSING and UNCOMMONNESSES. A rarer one is PHOTOCOMPOSING. In this set, I is the most frequent open letter (15 words). 5 words contain a doubled letter.

Full list 18

teleprocessinguncommonnessesundernourishedfideicommissumhydrocortisonesynchroflashesthromboplasticthromboplastinantineoplasticapostrophisingbronchospasticergastoplasmicerythroblasticfrictionlesslyoverprocessingphilosophisingphotocomposersphotocomposing

About this list

Words
18 (3 common words)
Common example
teleprocessing
Rare example
photocomposing
Doubled letters
5
Ending in S
3
Most frequent letter
I (15)

Questions

How many 14-letter words matching ______o___s___ are there?

18. 3 of them are common words.

What is a common example?

TELEPROCESSING is among the common words in this set.