6-Letter Words Matching __GN__

There are 22 6-letter words that match __GN__. 10 are common words, such as COGNAC and CYGNET. A rarer one is SIGNEE. In this set, I is the most frequent open letter (11 words). 2 words contain a doubled letter.

Full list 22

cognaccygneteggnogmagnetmagnumsignalsignedsignersignetsignorbagniohognutligninmagnonmignonpignuspignutregnalsegnosdognapregnumsignee

About this list

Words
22 (10 common words)
Common example
cognac
Rare example
signee
Doubled letters
2
Ending in S
2
Most frequent letter
I (11)

Questions

How many 6-letter words matching __gn__ are there?

22. 10 of them are common words.

What is a common example?

COGNAC is among the common words in this set.