10-Letter Words Matching ____U_O___

There are 18 10-letter words that match ____U_O___. 3 are common words, such as CELLULOIDS and CELLULOSES. A rarer one is UNNEUROTIC. In this set, S is the most frequent open letter (14 words). 4 words contain a doubled letter.

Full list 18

celluloidscellulosescornucopiaabcoulombsbinturongscellulosicgranulomascorduroyedechiuroidsgranulosesgranulosismistutoredophiuroidsouthumoredsubmucosaesubmucosalsubmucosasunneurotic

About this list

Words
18 (3 common words)
Common example
celluloids
Rare example
unneurotic
Doubled letters
4
Ending in S
10
Most frequent letter
S (14)

Questions

How many 10-letter words matching ____u_o___ are there?

18. 3 of them are common words.

What is a common example?

CELLULOIDS is among the common words in this set.