13-Letter Words Matching ______O_L____

There are 20 13-letter words that match ______O_L____. 4 are common words, such as ELECTROPLATED and ELECTROPLATES. A rarer one is WATERFOWLINGS. 7 words contain a doubled letter.

Full list 20

electroplatedelectroplatesforeknowledgesteamrollereddermatoplastyerythroblastsmethemoglobinsupercolliderthoracoplastytorticollisesergastoplasmshydrocolloidsoxyhemoglobinpeptidoglycanphragmoplastspreenrollmentsporopollenintropocollagenvacationlandswaterfowlings

About this list

Words
20 (4 common words)
Common example
electroplated
Rare example
waterfowlings
Doubled letters
7
Ending in S
8

Questions

How many 13-letter words matching ______o_l____ are there?

20. 4 of them are common words.

What is a common example?

ELECTROPLATED is among the common words in this set.