10-Letter Words Matching _______A_M

There are 12 10-letter words that match _______A_M. 5 are common words, such as ENTHUSIASM and ICONOCLASM. A rarer one is SARCOPLASM. In this set, S is the most frequent open letter (12 words). 2 words contain a doubled letter.

Full list 12

enthusiasmiconoclasmmeerschaumprotoplasmschoolmarmarchiplasmarchoplasmdeutoplasmhyaloplasmkaryoplasmlebensraumsarcoplasm

About this list

Words
12 (5 common words)
Common example
enthusiasm
Rare example
sarcoplasm
Doubled letters
2
Ending in S
0
Most frequent letter
S (12)

Questions

How many 10-letter words matching _______a_m are there?

12. 5 of them are common words.

What is a common example?

ENTHUSIASM is among the common words in this set.