12-Letter Words Matching _E________H_

There are 13 12-letter words that match _E________H_. 6 are common words, such as LEXICOGRAPHY and SEISMOGRAPHS. A rarer one is HETEROTROPHS. In this set, R is the most frequent open letter (12 words). 2 words contain a doubled letter.

Full list 13

lexicographyseismographsseismographyselenographyseventeenthswelterweightdemonographyfeatherlightheterographyheterotrophymerrythoughtweathertightheterotrophs

About this list

Words
13 (6 common words)
Common example
lexicography
Rare example
heterotrophs
Doubled letters
2
Ending in S
3
Most frequent letter
R (12)

Questions

How many 12-letter words matching _e________h_ are there?

13. 6 of them are common words.

What is a common example?

LEXICOGRAPHY is among the common words in this set.