15-Letter Words Matching ____E_R________

There are 20 15-letter words that match ____E_R________. 6 are common words, such as DAGUERREOTYPING and DISHEARTENINGLY. A rarer one is SYMMETRIZATIONS. 6 words contain a doubled letter.

Full list 20

daguerreotypingdishearteninglyentrepreneurialmisrepresentingnondepreciatingpasteurizationsdisheartenmentsentrepreneurismoxytetracyclinebiodegradationsdaguerreotypiesdaguerreotypistgeometrizationsnonmetropolitannonreproduciblenonreproductivenonsegregationssubterraneouslysymmetricalnesssymmetrizations

About this list

Words
20 (6 common words)
Common example
daguerreotyping
Rare example
symmetrizations
Doubled letters
6
Ending in S
8

Questions

How many 15-letter words matching ____e_r________ are there?

20. 6 of them are common words.

What is a common example?

DAGUERREOTYPING is among the common words in this set.