7-Letter Words Matching F_____A

There are 18 7-letter words that match F_____A. 3 are common words, such as FISTULA and FORMULA. A rarer one is FRENULA. 3 words contain a doubled letter.

Full list 18

fistulaformulafuchsiafalbalafeluccafermatafibromafilariafimbriafoveolafreesiafurculafurlanafarinhafavellafazendafontinafrenula

About this list

Words
18 (3 common words)
Common example
fistula
Rare example
frenula
Doubled letters
3
Ending in S
0

Questions

How many 7-letter words matching f_____a are there?

18. 3 of them are common words.

What is a common example?

FISTULA is among the common words in this set.