13-Letter Words Matching _____E____R__

There are 22 13-letter words that match _____E____R__. 7 are common words, such as CHECKERBOARDS and HYDROELECTRIC. A rarer one is TURBOELECTRIC. In this set, O is the most frequent open letter (22 words). 4 words contain a doubled letter.

Full list 22

checkerboardshydroelectricnortheasterlyphotoelectricplasterboardssoutheasterlythunderstormsarchaeopteryxclapperboardscounterchargeferroelectricparthenocarpyphotoelectronpiezoelectricweatherboardsbimolecularlycounterterrorflutterboardsinterelectronphycoerythrintriboelectricturboelectric

About this list

Words
22 (7 common words)
Common example
checkerboards
Rare example
turboelectric
Doubled letters
4
Ending in S
6
Most frequent letter
O (22)

Questions

How many 13-letter words matching _____e____r__ are there?

22. 7 of them are common words.

What is a common example?

CHECKERBOARDS is among the common words in this set.