11-Letter Words Matching ____N_____C

There are 20 11-letter words that match ____N_____C. 3 are common words, such as IMMUNOLOGIC and MELANCHOLIC. A rarer one is UNCINEMATIC. In this set, I is the most frequent open letter (20 words). 2 words contain a doubled letter.

Full list 20

immunologicmelancholicparentheticpalindromicchronologicimmunogenicnonanalyticphrenologicribonucleicscientisticsphinctericachondriticchernozemicmesonephricmetanephricnonanatomicpalynologicseminomadictechnologicuncinematic

About this list

Words
20 (3 common words)
Common example
immunologic
Rare example
uncinematic
Doubled letters
2
Ending in S
0
Most frequent letter
I (20)

Questions

How many 11-letter words matching ____n_____c are there?

20. 3 of them are common words.

What is a common example?

IMMUNOLOGIC is among the common words in this set.