13-Letter Words Matching _O________U__

There are 14 13-letter words that match _O________U__. 2 are common words, such as BOARDINGHOUSE and NONDISCLOSURE. A rarer one is POSTHOLOCAUST. In this set, N is the most frequent open letter (13 words). 0 words contain a doubled letter.

Full list 14

boardinghousenondisclosurecountinghousepostmenstrualcounterarguedcounterarguescounterthrustnonconceptualnonconsensualnonforfeiturenonhomosexualnonindividualnonpetroleumspostholocaust

About this list

Words
14 (2 common words)
Common example
boardinghouse
Rare example
postholocaust
Doubled letters
0
Ending in S
2
Most frequent letter
N (13)

Questions

How many 13-letter words matching _o________u__ are there?

14. 2 of them are common words.

What is a common example?

BOARDINGHOUSE is among the common words in this set.