13-Letter Words Matching ____E____O___

There are 23 13-letter words that match ____E____O___. 8 are common words, such as BACHELORHOODS and BACTERIOLOGIC. A rarer one is SEPTENTRIONAL. 7 words contain a doubled letter.

Full list 23

bachelorhoodsbacteriologicbulletproofedmasterstrokesmisdemeanoursnonreciprocaloveremotionalprogesteronesconservatoirecorrelationaldepressomotordessertspoonsmethemoglobinaggregationaldeuterostomesepidemiologicnonbehavioralnoncellulosicoxyhemoglobinpolyembryonicpostembryonalpostembryonicseptentrional

About this list

Words
23 (8 common words)
Common example
bachelorhoods
Rare example
septentrional
Doubled letters
7
Ending in S
6

Questions

How many 13-letter words matching ____e____o___ are there?

23. 8 of them are common words.

What is a common example?

BACHELORHOODS is among the common words in this set.