10-Letter Words Matching ____H___M_

There are 12 10-letter words that match ____H___M_. 7 are common words, such as BIORHYTHMS and BLITHESOME. A rarer one is TRITHEISMS. In this set, S is the most frequent open letter (11 words). 1 words contain a doubled letter.

Full list 12

biorhythmsblithesomediaphragmsearthwormslanthanumslunchroomspantheismstrichotomycolchicumsepiphragmserythrismstritheisms

About this list

Words
12 (7 common words)
Common example
biorhythms
Rare example
tritheisms
Doubled letters
1
Ending in S
10
Most frequent letter
S (11)

Questions

How many 10-letter words matching ____h___m_ are there?

12. 7 of them are common words.

What is a common example?

BIORHYTHMS is among the common words in this set.