13-Letter Words Matching H_____G______

There are 12 13-letter words that match H_____G______. 2 are common words, such as HETEROGENEITY and HETEROGENEOUS. A rarer one is HOMOLOGICALLY. In this set, O is the most frequent open letter (12 words). 2 words contain a doubled letter.

Full list 12

heterogeneityheterogeneoushematogenesisheterogenesesheterogenesisheterogenetichomolographicherringboningheterogametesheterogametichomologationshomologically

About this list

Words
12 (2 common words)
Common example
heterogeneity
Rare example
homologically
Doubled letters
2
Ending in S
6
Most frequent letter
O (12)

Questions

How many 13-letter words matching h_____g______ are there?

12. 2 of them are common words.

What is a common example?

HETEROGENEITY is among the common words in this set.