4-Letter Words Matching _O_R

There are 23 4-letter words that match _O_R. 18 are common words, such as BOAR and BOOR. A rarer one is NOIR. In this set, U is the most frequent open letter (8 words). 6 words contain a doubled letter.

Full list 23

boarboordoerdoordourfourgoerhoerhourlourmoorpoorpourroarsoarsourtouryourcoirhoartorrdorrnoir

About this list

Words
23 (18 common words)
Common example
boar
Rare example
noir
Doubled letters
6
Ending in S
0
Most frequent letter
U (8)

Questions

How many 4-letter words matching _o_r are there?

23. 18 of them are common words.

What is a common example?

BOAR is among the common words in this set.