10-Letter Words Matching ____O____N

There are 34 10-letter words that match ____O____N. 6 are common words, such as CONCOCTION and CONTORTION. A rarer one is TELEOSTEAN. In this set, I is the most frequent open letter (26 words). 2 words contain a doubled letter.

Full list 34

Common words

concoctioncontortiondistortionforeordainphenomenonproportionachromatinbenzofurancatholiconcladocerandiaconicongorgoneion
concoctioncontortiondistortionforeordainphenomenonproportionachromatinbenzofurancatholiconcladocerandiaconicongorgoneionharmoniconinchoationmangosteenpicrotoxinprecondemnprotohumanpsilocybinreadoptionresponsioncalmodulindaunomycineuglobulinhomoousianleucocidinlincomycinneurotoxinnitrofurannonconcernpolyolefinpremoistenpreportionteleostean

About this list

Words
34 (6 common words)
Common example
concoction
Rare example
teleostean
Doubled letters
2
Ending in S
0
Most frequent letter
I (26)

Questions

How many 10-letter words matching ____o____n are there?

34. 6 of them are common words.

What is a common example?

CONCOCTION is among the common words in this set.