3-Letter Words Ending in OO

There are 12 3-letter words that end in OO. 7 are common words, such as BOO and COO. A rarer one is NOO. 12 words contain a doubled letter.

Full list 12

boocoogoomootoowoozoohooloopooroonoo

About this list

Words
12 (7 common words)
Common example
boo
Rare example
noo
Doubled letters
12
Ending in S
0

Questions

How many 3-letter words ending in oo are there?

12. 7 of them are common words.

What is a common example?

BOO is among the common words in this set.