7-Letter Words Matching ____E_M

There are 15 7-letter words that match ____E_M. 3 are common words, such as MIDTERM and PRETERM. A rarer one is REDREAM. In this set, R is the most frequent open letter (9 words). 3 words contain a doubled letter.

Full list 15

midtermpretermsunbeamnauseamberseemmisdeemoospermbiohermdishelmepidermexodermeyebeammistermoutbeamredream

About this list

Words
15 (3 common words)
Common example
midterm
Rare example
redream
Doubled letters
3
Ending in S
0
Most frequent letter
R (9)

Questions

How many 7-letter words matching ____e_m are there?

15. 3 of them are common words.

What is a common example?

MIDTERM is among the common words in this set.