9-Letter Words Matching ____F_O__

There are 28 9-letter words that match ____F_O__. 12 are common words, such as BULLFROGS and CHIEFDOMS. A rarer one is PROOFROOM. In this set, R is the most frequent open letter (21 words). 8 words contain a doubled letter.

Full list 28

Common words

bullfrogschiefdomscrowfootsflatfootsforefrontfroufroushoarfrostlakefrontleapfrogsoverflownoverflowssangfroid
bullfrogschiefdomscrowfootsflatfootsforefrontfroufroushoarfrostlakefrontleapfrogsoverflownoverflowssangfroidworkflowsbackflowschamfronsclifftopscornflourdeepfrozegigaflopsmegaflopsshopfrontstaffroomteraflopswavefrontchanfronsmoufflonsmycofloraproofroom

About this list

Words
28 (12 common words)
Common example
bullfrogs
Rare example
proofroom
Doubled letters
8
Ending in S
16
Most frequent letter
R (21)

Questions

How many 9-letter words matching ____f_o__ are there?

28. 12 of them are common words.

What is a common example?

BULLFROGS is among the common words in this set.