7-Letter Words Matching V_____A

There are 18 7-letter words that match V_____A. 6 are common words, such as VANILLA and VERANDA. A rarer one is VIREMIA. In this set, I is the most frequent open letter (13 words). 4 words contain a doubled letter.

Full list 18

vanillaverandaverbenaverrucavisceravivariavaloniavariolavedaliaviaticavaccinavalvulavasculavelariavexillavicugnavinculaviremia

About this list

Words
18 (6 common words)
Common example
vanilla
Rare example
viremia
Doubled letters
4
Ending in S
0
Most frequent letter
I (13)

Questions

How many 7-letter words matching v_____a are there?

18. 6 of them are common words.

What is a common example?

VANILLA is among the common words in this set.