12-Letter Words Matching T________R__

There are 22 12-letter words that match T________R__. 7 are common words, such as TEMPERATURES and THERMOMETRIC. A rarer one is TROCHOPHORES. In this set, R is the most frequent open letter (20 words). 4 words contain a doubled letter.

Full list 22

temperaturesthermometricthoroughbredtransfiguredtransfigurestriangularlytropospheresteeterboardstrestleworkstropospherictensiometricthalassocratthimbleberrythitherwardsthunderbirdstransnaturaltrellisworkstrichopterantrimethoprimtrochanteraltrochanterictrochophores

About this list

Words
22 (7 common words)
Common example
temperatures
Rare example
trochophores
Doubled letters
4
Ending in S
9
Most frequent letter
R (20)

Questions

How many 12-letter words matching t________r__ are there?

22. 7 of them are common words.

What is a common example?

TEMPERATURES is among the common words in this set.