13-Letter Words Matching ____H_N______

There are 23 13-letter words that match ____H_N______. 7 are common words, such as BACCHANALIANS and ELEPHANTIASES. A rarer one is TRICHINOSISES. In this set, I is the most frequent open letter (22 words). 5 words contain a doubled letter.

Full list 23

bacchanalianselephantiaseselephantiasislaughingstockmerchandisersmerchandisingmerchandizingepiphenomenonparthenocarpystephanotisessymphonicallytrephinationsarsphenaminesballhandlingsdiaphaneitiesdolphinfishesepiphenomenalfluphenazinesmischannelingmischannelledperphenazinessymphoniouslytrichinosises

About this list

Words
23 (7 common words)
Common example
bacchanalians
Rare example
trichinosises
Doubled letters
5
Ending in S
13
Most frequent letter
I (22)

Questions

How many 13-letter words matching ____h_n______ are there?

23. 7 of them are common words.

What is a common example?

BACCHANALIANS is among the common words in this set.