11-Letter Words Matching A_________M

There are 28 11-letter words that match A_________M. 5 are common words, such as ABSENTEEISM and AGNOSTICISM. A rarer one is ARTERIOGRAM. In this set, I is the most frequent open letter (27 words). 3 words contain a doubled letter.

Full list 28

Common words

absenteeismagnosticismagrarianismanachronismastigmatismabecedariumacademicismachromatismacinaciformadiaphorismadventurismanamorphism
absenteeismagnosticismagrarianismanachronismastigmatismabecedariumacademicismachromatismacinaciformadiaphorismadventurismanamorphismantependiumantheridiumantifascismantirrhinumarchegoniumaspergillumaspersoriumathleticismautoerotismadoptianismadoptionismanimalculumantielitismantirealismarchdukedomarteriogram

About this list

Words
28 (5 common words)
Common example
absenteeism
Rare example
arteriogram
Doubled letters
3
Ending in S
0
Most frequent letter
I (27)

Questions

How many 11-letter words matching a_________m are there?

28. 5 of them are common words.

What is a common example?

ABSENTEEISM is among the common words in this set.