4-Letter Words Matching _A_R

There are 14 4-letter words that match _A_R. 4 are common words, such as FAIR and HAIR. A rarer one is WAUR. In this set, I is the most frequent open letter (7 words). 4 words contain a doubled letter.

Full list 14

fairhairlairpairgaurhaarparrtahrvaircarrmaarmairwairwaur

About this list

Words
14 (4 common words)
Common example
fair
Rare example
waur
Doubled letters
4
Ending in S
0
Most frequent letter
I (7)

Questions

How many 4-letter words matching _a_r are there?

14. 4 of them are common words.

What is a common example?

FAIR is among the common words in this set.