13-Letter Words Matching _H_M_________

There are 16 13-letter words that match _H_M_________. 2 are common words, such as CHAMPIONSHIPS and SHAMELESSNESS. A rarer one is WHIMSICALNESS. In this set, E is the most frequent open letter (14 words). 4 words contain a doubled letter.

Full list 16

championshipsshamelessnesschemisorptionchemoreceptorchimneypiecesrhombohedronschameleonlikechemosurgicalchemotaxonomychemotropismschymotrypsinsthimbleriggedthimbleriggerthymectomizedthymectomizeswhimsicalness

About this list

Words
16 (2 common words)
Common example
championships
Rare example
whimsicalness
Doubled letters
4
Ending in S
8
Most frequent letter
E (14)

Questions

How many 13-letter words matching _h_m_________ are there?

16. 2 of them are common words.

What is a common example?

CHAMPIONSHIPS is among the common words in this set.