15-Letter Words Matching ____R____C_____

There are 17 15-letter words that match ____R____C_____. 4 are common words, such as DIVERSIFICATION and QUADRUPLICATING. A rarer one is SUPERINFECTIONS. In this set, T is the most frequent open letter (16 words). 2 words contain a doubled letter.

Full list 17

diversificationquadruplicatingquadruplicationsuperstructuresdesertificationsuperstructuralallergenicitiesdecertificationhypertonicitieshypervelocitiesnonaristocraticquadruplicitiesrecertificationrefortificationsuperefficiencysuperinductionssuperinfections

About this list

Words
17 (4 common words)
Common example
diversification
Rare example
superinfections
Doubled letters
2
Ending in S
7
Most frequent letter
T (16)

Questions

How many 15-letter words matching ____r____c_____ are there?

17. 4 of them are common words.

What is a common example?

DIVERSIFICATION is among the common words in this set.