10-Letter Words Matching ____T___M_

There are 19 10-letter words that match ____T___M_. 4 are common words, such as COURTROOMS and MIDSTREAMS. A rarer one is MENSTRUUMS. In this set, R is the most frequent open letter (17 words). 4 words contain a doubled letter.

Full list 19

courtroomsmidstreamspracticumsstratagemscryptogamseighteenmoguestroomsjointwormspyrethrumswheatwormsairstreamscryptonymsectothermsendothermsendothermyheartwormskeratotomykinetosomemenstruums

About this list

Words
19 (4 common words)
Common example
courtrooms
Rare example
menstruums
Doubled letters
4
Ending in S
15
Most frequent letter
R (17)

Questions

How many 10-letter words matching ____t___m_ are there?

19. 4 of them are common words.

What is a common example?

COURTROOMS is among the common words in this set.