15-Letter Words Matching __O_____R______

There are 22 15-letter words that match __O_____R______. 6 are common words, such as AROMATHERAPISTS and BLOODTHIRSTIEST. A rarer one is PROSOPOGRAPHIES. In this set, I is the most frequent open letter (21 words). 3 words contain a doubled letter.

Full list 22

aromatherapistsbloodthirstiestneoconservativephotoengravingsphotojournalismphotojournalistchoriocarcinomaeconometriciansphosphocreatinephosphoproteinsphotometricallyphotomicrographphotomicroscopeproconservationapolipoproteinscholestyramineschondrocraniumseconometricallyexoerythrocyticneoconservatismphotodegradableprosopographies

About this list

Words
22 (6 common words)
Common example
aromatherapists
Rare example
prosopographies
Doubled letters
3
Ending in S
8
Most frequent letter
I (21)

Questions

How many 15-letter words matching __o_____r______ are there?

22. 6 of them are common words.

What is a common example?

AROMATHERAPISTS is among the common words in this set.