13-Letter Words Matching ____R____C___

There are 20 13-letter words that match ____R____C___. 4 are common words, such as DISCREPANCIES and INTERGALACTIC. A rarer one is SUPERINFECTED. In this set, I is the most frequent open letter (18 words). 1 words contain a doubled letter.

Full list 20

discrepanciesintergalacticnonpracticingquadruplicateallergenicitycyberneticiancyberneticistdextroglucosespheroidicitydeterminaciesfluorouracilshypereutectichypertonicityhypervelocityoneiromanciesquadruplicitysuperagenciessuperchurchessuperinducingsuperinfected

About this list

Words
20 (4 common words)
Common example
discrepancies
Rare example
superinfected
Doubled letters
1
Ending in S
6
Most frequent letter
I (18)

Questions

How many 13-letter words matching ____r____c___ are there?

20. 4 of them are common words.

What is a common example?

DISCREPANCIES is among the common words in this set.