15-Letter Words Matching S_________N____

There are 13 15-letter words that match S_________N____. 2 are common words, such as SEGREGATIONISTS and SERVOMECHANISMS. A rarer one is SUPERGOVERNMENT. In this set, E is the most frequent open letter (13 words). 1 words contain a doubled letter.

Full list 13

segregationistsservomechanismsservomechanicalsimplicidentatesemicentennialssemidocumentaryspermatogenesesspermatogenesissteroidogenesessteroidogenesissupercontinentssuperconvenientsupergovernment

About this list

Words
13 (2 common words)
Common example
segregationists
Rare example
supergovernment
Doubled letters
1
Ending in S
8
Most frequent letter
E (13)

Questions

How many 15-letter words matching s_________n____ are there?

13. 2 of them are common words.

What is a common example?

SEGREGATIONISTS is among the common words in this set.