6-Letter Words Matching __R__O

There are 20 6-letter words that match __R__O. 7 are common words, such as ARROYO and BARRIO. A rarer one is SORGHO. In this set, O is the most frequent open letter (11 words). 5 words contain a doubled letter.

Full list 20

arroyobarriocardioforegoheretomerinoviragoburgoochromodoradoforedonardooparamoteredotoreroturacoaerugokarroomorphosorgho

About this list

Words
20 (7 common words)
Common example
arroyo
Rare example
sorgho
Doubled letters
5
Ending in S
0
Most frequent letter
O (11)

Questions

How many 6-letter words matching __r__o are there?

20. 7 of them are common words.

What is a common example?

ARROYO is among the common words in this set.