8-Letter Words Matching _____A_P

There are 18 8-letter words that match _____A_P. 2 are common words, such as FIREDAMP and HEADLAMP. A rarer one is XYLOCARP. In this set, R is the most frequent open letter (11 words). 2 words contain a doubled letter.

Full list 18

firedampheadlampascocarpblowlampendocarpmesocarppericarpbaaskaapcantraipminicampmoldwarpmonocarppedipalppodocarpprestamptaillamptieclaspxylocarp

About this list

Words
18 (2 common words)
Common example
firedamp
Rare example
xylocarp
Doubled letters
2
Ending in S
0
Most frequent letter
R (11)

Questions

How many 8-letter words matching _____a_p are there?

18. 2 of them are common words.

What is a common example?

FIREDAMP is among the common words in this set.