8-Letter Words Matching _____R_O

There are 13 8-letter words that match _____R_O. 6 are common words, such as BUCKAROO and CONCERTO. A rarer one is NOTTURNO. In this set, O is the most frequent open letter (11 words). 8 words contain a doubled letter.

Full list 13

buckarooconcertohithertokangaroooratorioscenariojackeroowallaroowanderoobuckeroojackaroolotharionotturno

About this list

Words
13 (6 common words)
Common example
buckaroo
Rare example
notturno
Doubled letters
8
Ending in S
0
Most frequent letter
O (11)

Questions

How many 8-letter words matching _____r_o are there?

13. 6 of them are common words.

What is a common example?

BUCKAROO is among the common words in this set.