14-Letter Words Matching _________C_N__

There are 14 14-letter words that match _________C_N__. 2 are common words, such as INSIGNIFICANCE and PREADOLESCENCE. A rarer one is TRICHOTHECENES. In this set, S is the most frequent open letter (14 words). 2 words contain a doubled letter.

Full list 14

insignificancepreadolescenceinsignificancypostpubescenceantidesiccantsdryopithecinesletterspacingspostpubescentspreadolescentspresentencingsrejuvenescencestratovolcanossubadolescentstrichothecenes

About this list

Words
14 (2 common words)
Common example
insignificance
Rare example
trichothecenes
Doubled letters
2
Ending in S
9
Most frequent letter
S (14)

Questions

How many 14-letter words matching _________c_n__ are there?

14. 2 of them are common words.

What is a common example?

INSIGNIFICANCE is among the common words in this set.