13-Letter Words Matching T_____G______

There are 18 13-letter words that match T_____G______. 5 are common words, such as THANKSGIVINGS and THEOLOGICALLY. A rarer one is TUMORIGENESIS. In this set, O is the most frequent open letter (15 words). 4 words contain a doubled letter.

Full list 18

thanksgivingstheologicallythoroughbredsthoroughfaresthoroughgoingtopologicallythermogenesisthoroughpacedthoroughwortstypologicallyteemingnessesteratogenesesteratogenesisthermographicthoroughbracetsutsugamushitumorigenesestumorigenesis

About this list

Words
18 (5 common words)
Common example
thanksgivings
Rare example
tumorigenesis
Doubled letters
4
Ending in S
10
Most frequent letter
O (15)

Questions

How many 13-letter words matching t_____g______ are there?

18. 5 of them are common words.

What is a common example?

THANKSGIVINGS is among the common words in this set.