12-Letter Words Matching G________N__

There are 15 12-letter words that match G________N__. 6 are common words, such as GARNISHMENTS and GENERATIONAL. A rarer one is GUNSMITHINGS. In this set, I is the most frequent open letter (14 words). 2 words contain a doubled letter.

Full list 15

garnishmentsgenerationalgeosynclinesgoalkeepingsgrandparentsgreasepaintsgeanticlinalgeosynclinalgeanticlinesglassmakingsglucosaminesglutathionesgoaltendingsgunslingingsgunsmithings

About this list

Words
15 (6 common words)
Common example
garnishments
Rare example
gunsmithings
Doubled letters
2
Ending in S
12
Most frequent letter
I (14)

Questions

How many 12-letter words matching g________n__ are there?

15. 6 of them are common words.

What is a common example?

GARNISHMENTS is among the common words in this set.