15-Letter Words Matching H____E_________

There are 12 15-letter words that match H____E_________. 4 are common words, such as HALFHEARTEDNESS and HARDHEARTEDNESS. A rarer one is HYPOSENSITIZING. In this set, S is the most frequent open letter (11 words). 3 words contain a doubled letter.

Full list 12

halfheartednesshardheartednesshomogenizationshomosexualitieshamamelidaceoushomogeneousnesshyperextensionsholometabolismshomogenisationshyperexcitementhyperexcretionshyposensitizing

About this list

Words
12 (4 common words)
Common example
halfheartedness
Rare example
hyposensitizing
Doubled letters
3
Ending in S
10
Most frequent letter
S (11)

Questions

How many 15-letter words matching h____e_________ are there?

12. 4 of them are common words.

What is a common example?

HALFHEARTEDNESS is among the common words in this set.