6-Letter Words Matching ___C_O

There are 12 6-letter words that match ___C_O. 7 are common words, such as GAUCHO and HONCHO. A rarer one is WHACKO. In this set, H is the most frequent open letter (9 words). 3 words contain a doubled letter.

Full list 12

gauchohonchonuncioponchopsychoreechostuccoranchothickocoocooshackowhacko

About this list

Words
12 (7 common words)
Common example
gaucho
Rare example
whacko
Doubled letters
3
Ending in S
0
Most frequent letter
H (9)

Questions

How many 6-letter words matching ___c_o are there?

12. 7 of them are common words.

What is a common example?

GAUCHO is among the common words in this set.