14-Letter Words Matching ____I________L

There are 20 14-letter words that match ____I________L. 3 are common words, such as ARCHIEPISCOPAL and POSTINDUSTRIAL. A rarer one is UNIDIMENSIONAL. In this set, O is the most frequent open letter (19 words). 0 words contain a doubled letter.

Full list 20

archiepiscopalpostindustrialterminologicalunidirectionalcriminologicalphysiognomicalspatiotemporaltridimensionaltrinitrocresoltrinitrophenolbibliomaniacalconfirmationalcraniocerebralmultidialectalmultifactorialmultipotentialnondimensionalnondirectionalpteridologicalunidimensional

About this list

Words
20 (3 common words)
Common example
archiepiscopal
Rare example
unidimensional
Doubled letters
0
Ending in S
0
Most frequent letter
O (19)

Questions

How many 14-letter words matching ____i________l are there?

20. 3 of them are common words.

What is a common example?

ARCHIEPISCOPAL is among the common words in this set.