10-Letter Words Matching ___RF_____

There are 21 10-letter words that match ___RF_____. 6 are common words, such as HOARFROSTS and OVERFILLED. A rarer one is STARFRUITS. In this set, E is the most frequent open letter (17 words). 4 words contain a doubled letter.

Full list 21

hoarfrostsoverfilledoverflightoverflowedoverflyingstarfishesdoorframesscurfinessstarflowerwharfingerboarfishesdwarfishlyfearfulleroverfacileoverfavorsoverfearedoverfishedoverfishesoverfundedscarfskinsstarfruits

About this list

Words
21 (6 common words)
Common example
hoarfrosts
Rare example
starfruits
Doubled letters
4
Ending in S
9
Most frequent letter
E (17)

Questions

How many 10-letter words matching ___rf_____ are there?

21. 6 of them are common words.

What is a common example?

HOARFROSTS is among the common words in this set.