9-Letter Words Matching ____O_B__

There are 13 9-letter words that match ____O_B__. 6 are common words, such as BUNCOMBES and HOBNOBBED. A rarer one is SKIBOBBER. In this set, O is the most frequent open letter (8 words). 6 words contain a doubled letter.

Full list 13

buncombeshobnobbednoncombatschoolbagschoolboyshadowboxbeslobbercoxcombryeuphorbiacoulombichobnobbermisdoubtsskibobber

About this list

Words
13 (6 common words)
Common example
buncombes
Rare example
skibobber
Doubled letters
6
Ending in S
2
Most frequent letter
O (8)

Questions

How many 9-letter words matching ____o_b__ are there?

13. 6 of them are common words.

What is a common example?

BUNCOMBES is among the common words in this set.