14-Letter Words Matching ___H_N________

There are 18 14-letter words that match ___H_N________. 5 are common words, such as ALPHANUMERICAL and AUTHENTICATING. A rarer one is UNTHINKABILITY. In this set, E is the most frequent open letter (17 words). 3 words contain a doubled letter.

Full list 18

alphanumericalauthenticatingauthenticationauthenticitiesmechanizationsasthenospheresauthenticatorsmechanotherapyasthenosphericdiphenylamineseuphoniousnesslichenologicallichenologistsmachineabilitynonhandicappedprehensilitiesunchangingnessunthinkability

About this list

Words
18 (5 common words)
Common example
alphanumerical
Rare example
unthinkability
Doubled letters
3
Ending in S
9
Most frequent letter
E (17)

Questions

How many 14-letter words matching ___h_n________ are there?

18. 5 of them are common words.

What is a common example?

ALPHANUMERICAL is among the common words in this set.