6-Letter Words Matching O__U__

There are 18 6-letter words that match O__U__. 10 are common words, such as OAKUMS and OBTUSE. A rarer one is OSMUND. In this set, S is the most frequent open letter (12 words). 4 words contain a doubled letter.

Full list 18

oakumsobtuseoccultoccupyoccursodiumsodoursonrushopiumsordureobduceobtundoppugnodeumsoleumsosculaosculeosmund

About this list

Words
18 (10 common words)
Common example
oakums
Rare example
osmund
Doubled letters
4
Ending in S
7
Most frequent letter
S (12)

Questions

How many 6-letter words matching o__u__ are there?

18. 10 of them are common words.

What is a common example?

OAKUMS is among the common words in this set.