11-Letter Words Matching ____H_T____

There are 25 11-letter words that match ____H_T____. 6 are common words, such as BIRTHSTONES and CROCHETINGS. A rarer one is SYNTHETASES. In this set, I is the most frequent open letter (20 words). 4 words contain a doubled letter.

Full list 25

Common words

birthstonescrochetingsmatchsticksnonrhythmicpropheticaltouchstonesbiorhythmicbrushstrokeepiphytoticepitheticallatchstringpitchstones
birthstonescrochetingsmatchsticksnonrhythmicpropheticaltouchstonesbiorhythmicbrushstrokeepiphytoticepitheticallatchstringpitchstonessyntheticalwatchstrapsaestheticaldysrhythmiadysrhythmicepiphytismsgraphitizedgraphitizespotshottingprophethoodpyrrhotitesspaghettinisynthetases

About this list

Words
25 (6 common words)
Common example
birthstones
Rare example
synthetases
Doubled letters
4
Ending in S
10
Most frequent letter
I (20)

Questions

How many 11-letter words matching ____h_t____ are there?

25. 6 of them are common words.

What is a common example?

BIRTHSTONES is among the common words in this set.