9-Letter Words Matching ___L___M_

There are 20 9-letter words that match ___L___M_. 5 are common words, such as BALLROOMS and POOLROOMS. A rarer one is VILLADOMS. In this set, S is the most frequent open letter (18 words). 13 words contain a doubled letter.

Full list 20

ballroomspoolroomsthalliumstrilliumswholesomebdelliumsbollwormscycloramamealwormsngultrumssmalltimechiliasmsmilliohmsmilliremsnonlegumephallismspicloramspsylliumstoolroomsvilladoms

About this list

Words
20 (5 common words)
Common example
ballrooms
Rare example
villadoms
Doubled letters
13
Ending in S
16
Most frequent letter
S (18)

Questions

How many 9-letter words matching ___l___m_ are there?

20. 5 of them are common words.

What is a common example?

BALLROOMS is among the common words in this set.