13-Letter Words Matching S_________R__

There are 21 13-letter words that match S_________R__. 8 are common words, such as SHUFFLEBOARDS and SOUTHEASTERLY. A rarer one is SYLVICULTURES. In this set, T is the most frequent open letter (18 words). 2 words contain a doubled letter.

Full list 21

shuffleboardssoutheasterlysouthwesterlyspectacularlysteamrolleredstratospheresstratosphericsubstructuressilviculturalsilviculturessiphonophoressocioculturalspectrometricsubternaturalscratchboardsselenocentricsensitometricsensorineuralsomatopleuressubstructuralsylvicultures

About this list

Words
21 (8 common words)
Common example
shuffleboards
Rare example
sylvicultures
Doubled letters
2
Ending in S
8
Most frequent letter
T (18)

Questions

How many 13-letter words matching s_________r__ are there?

21. 8 of them are common words.

What is a common example?

SHUFFLEBOARDS is among the common words in this set.