6-Letter Words Matching O_R___

There are 12 6-letter words that match O_R___. 3 are common words, such as OARING and OGRESS. A rarer one is OUREBI. In this set, I is the most frequent open letter (7 words). 4 words contain a doubled letter.

Full list 12

oaringogressonrushorreryocreaeogrishogrismooraliorriceourangourariourebi

About this list

Words
12 (3 common words)
Common example
oaring
Rare example
ourebi
Doubled letters
4
Ending in S
1
Most frequent letter
I (7)

Questions

How many 6-letter words matching o_r___ are there?

12. 3 of them are common words.

What is a common example?

OARING is among the common words in this set.