8-Letter Words Matching ___P___M

There are 13 8-letter words that match ___P___M. 2 are common words, such as NEOPLASM and TYMPANUM. A rarer one is WHIPWORM. In this set, O is the most frequent open letter (8 words). 3 words contain a doubled letter.

Full list 13

neoplasmtympanumbioplasmnympheumpoppadomsapphismshipwormsimplismaxoplasmpuppydomslipformtimpanumwhipworm

About this list

Words
13 (2 common words)
Common example
neoplasm
Rare example
whipworm
Doubled letters
3
Ending in S
0
Most frequent letter
O (8)

Questions

How many 8-letter words matching ___p___m are there?

13. 2 of them are common words.

What is a common example?

NEOPLASM is among the common words in this set.