9-Letter Words Matching B_____F__

There are 13 9-letter words that match B_____F__. 7 are common words, such as BEAUTIFUL and BLASTOFFS. A rarer one is BEDWARFED. 6 words contain a doubled letter.

Full list 13

beautifulblastoffsbountifulbrushoffsbucketfulbutterfatbutterflybasketfulblithefulbottlefulbreastfedbarrelfulbedwarfed

About this list

Words
13 (7 common words)
Common example
beautiful
Rare example
bedwarfed
Doubled letters
6
Ending in S
2

Questions

How many 9-letter words matching b_____f__ are there?

13. 7 of them are common words.

What is a common example?

BEAUTIFUL is among the common words in this set.