10-Letter Words Matching ____O____P

There are 12 10-letter words that match ____O____P. 6 are common words, such as AUTHORSHIP and CENSORSHIP. A rarer one is FACTORSHIP. In this set, I is the most frequent open letter (12 words). 3 words contain a doubled letter.

Full list 12

authorshipcensorshipeditorshipfellowshipnincompooppillowslipdeaconshipmentorshippastorshiprectorshipdoctorshipfactorship

About this list

Words
12 (6 common words)
Common example
authorship
Rare example
factorship
Doubled letters
3
Ending in S
0
Most frequent letter
I (12)

Questions

How many 10-letter words matching ____o____p are there?

12. 6 of them are common words.

What is a common example?

AUTHORSHIP is among the common words in this set.