12-Letter Words Matching O_____C_____

There are 18 12-letter words that match O_____C_____. 7 are common words, such as OBSTRUCTIONS and OLIGARCHICAL. A rarer one is OXALOACETATE. In this set, E is the most frequent open letter (15 words). 3 words contain a doubled letter.

Full list 18

obstructionsoligarchicalopalescencesossificationoutplacementoverdecorateoverexcitingoneirocriticobstructivesopalescentlyorganicitiesoverdocumentoverfocusingoverfocussedoverfocussesoverpackagedoverpackagesoxaloacetate

About this list

Words
18 (7 common words)
Common example
obstructions
Rare example
oxaloacetate
Doubled letters
3
Ending in S
6
Most frequent letter
E (15)

Questions

How many 12-letter words matching o_____c_____ are there?

18. 7 of them are common words.

What is a common example?

OBSTRUCTIONS is among the common words in this set.