13-Letter Words Matching O_________C__

There are 12 13-letter words that match O_________C__. 2 are common words, such as OBSOLESCENCES and OMNIPRESENCES. A rarer one is OVERRELIANCES. In this set, R is the most frequent open letter (10 words). 2 words contain a doubled letter.

Full list 12

obsolescencesomnipresencesodontologicaloverskepticalovertechnicalochlocraticalorismologicaloutreproducedoutreproducesoverabstractsoverissuancesoverreliances

About this list

Words
12 (2 common words)
Common example
obsolescences
Rare example
overreliances
Doubled letters
2
Ending in S
6
Most frequent letter
R (10)

Questions

How many 13-letter words matching o_________c__ are there?

12. 2 of them are common words.

What is a common example?

OBSOLESCENCES is among the common words in this set.