15-Letter Words Matching _____R__H______

There are 20 15-letter words that match _____R__H______. 4 are common words, such as DEMOGRAPHICALLY and TELEGRAPHICALLY. A rarer one is LOGOGRAPHICALLY. In this set, C is the most frequent open letter (20 words). 13 words contain a doubled letter.

Full list 20

demographicallytelegraphicallytopographicallytypographicallyautographicallyelectrochemicalelectrophoreseselectrophoresiselectrophoreticelectrothermicsholographicallyxerographicallyautotrophicallyboustrophedonicdiastrophicallyelectrophoresedgeostrophicallyideographicallylickerishnesseslogographically

About this list

Words
20 (4 common words)
Common example
demographically
Rare example
logographically
Doubled letters
13
Ending in S
4
Most frequent letter
C (20)

Questions

How many 15-letter words matching _____r__h______ are there?

20. 4 of them are common words.

What is a common example?

DEMOGRAPHICALLY is among the common words in this set.