14-Letter Words Matching ________P_O___

There are 18 14-letter words that match ________P_O___. 2 are common words, such as CLAUSTROPHOBIA and CLAUSTROPHOBIC. A rarer one is SPERMATOPHORES. In this set, O is the most frequent open letter (17 words). 4 words contain a doubled letter.

Full list 18

claustrophobiaclaustrophobiccongresspeopleallopolyploidsallopolyploidyautopolyploidsautopolyploidybusinesspeoplechromatophoresclaustrophobescomputerphobescomputerphobiacomputerphobicendopolyploidypaedomorphosespaedomorphosispneumatophoresspermatophores

About this list

Words
18 (2 common words)
Common example
claustrophobia
Rare example
spermatophores
Doubled letters
4
Ending in S
9
Most frequent letter
O (17)

Questions

How many 14-letter words matching ________p_o___ are there?

18. 2 of them are common words.

What is a common example?

CLAUSTROPHOBIA is among the common words in this set.