5-Letter Words Matching _I_M_

There are 13 5-letter words that match _I_M_. 9 are common words, such as FILMS and FILMY. A rarer one is SIXMO. In this set, S is the most frequent open letter (7 words). 2 words contain a doubled letter.

Full list 13

filmsfilmyfirmsgimmegismogizmojimmypigmysigmabiomedismejismssixmo

About this list

Words
13 (9 common words)
Common example
films
Rare example
sixmo
Doubled letters
2
Ending in S
3
Most frequent letter
S (7)

Questions

How many 5-letter words matching _i_m_ are there?

13. 9 of them are common words.

What is a common example?

FILMS is among the common words in this set.