8-Letter Words Matching ____R__C

There are 15 8-letter words that match ____R__C. 1 are common words, such as ALLERGIC and ASCORBIC. A rarer one is YTTERBIC. In this set, I is the most frequent open letter (15 words). 3 words contain a doubled letter.

Full list 15

allergicascorbicautarkicceleriacdichroicendermicexoergicsynergictheurgicunheroicbistroicdeserticgabbroicliturgicytterbic

About this list

Words
15 (1 common words)
Common example
allergic
Rare example
ytterbic
Doubled letters
3
Ending in S
0
Most frequent letter
I (15)

Questions

How many 8-letter words matching ____r__c are there?

15. 1 of them are common words.

What is a common example?

ALLERGIC is among the common words in this set.