4-Letter Words Matching B_L_

There are 21 4-letter words that match B_L_. 18 are common words, such as BALD and BALE. A rarer one is BALS. In this set, A is the most frequent open letter (7 words). 5 words contain a doubled letter.

Full list 21

baldbalebalkballbalmbellbeltbilebilkbillbolaboldbolebollboltbulbbulkbullbelsbolobals

About this list

Words
21 (18 common words)
Common example
bald
Rare example
bals
Doubled letters
5
Ending in S
2
Most frequent letter
A (7)

Questions

How many 4-letter words matching b_l_ are there?

21. 18 of them are common words.

What is a common example?

BALD is among the common words in this set.