15-Letter Words Matching __R___________N

There are 12 15-letter words that match __R___________N. 4 are common words, such as CIRCUMSCRIPTION and MARGINALIZATION. A rarer one is FORMULARIZATION. In this set, I is the most frequent open letter (12 words). 4 words contain a doubled letter.

Full list 12

circumscriptionmarginalizationparliamentarianpersonificationagribusinessmancircularizationparallelizationparametrizationpersonalizationagribusinessmencircumvallationformularization

About this list

Words
12 (4 common words)
Common example
circumscription
Rare example
formularization
Doubled letters
4
Ending in S
0
Most frequent letter
I (12)

Questions

How many 15-letter words matching __r___________n are there?

12. 4 of them are common words.

What is a common example?

CIRCUMSCRIPTION is among the common words in this set.