7-Letter Words Matching C_____O

There are 22 7-letter words that match C_____O. 4 are common words, such as CALYPSO and CASSINO. A rarer one is CURACAO. In this set, A is the most frequent open letter (16 words). 5 words contain a doubled letter.

Full list 22

calypsocassinocentavocheeriocarabaocattalocavettocembalocentimochorizoclarinocoquitocorantocriollocrusadocruzadocabildocalandochamisochicanocornutocuracao

About this list

Words
22 (4 common words)
Common example
calypso
Rare example
curacao
Doubled letters
5
Ending in S
0
Most frequent letter
A (16)

Questions

How many 7-letter words matching c_____o are there?

22. 4 of them are common words.

What is a common example?

CALYPSO is among the common words in this set.