10-Letter Words Matching __Y____N__

There are 12 10-letter words that match __Y____N__. 5 are common words, such as BOYFRIENDS and GLYCERINES. A rarer one is THYMIDINES. In this set, I is the most frequent open letter (12 words). 0 words contain a doubled letter.

Full list 12

boyfriendsglycerinesjoyridingsskydivingswayfaringsdayspringsglycogenicoxymoronicphylogenicthylacinesthyroxinesthymidines

About this list

Words
12 (5 common words)
Common example
boyfriends
Rare example
thymidines
Doubled letters
0
Ending in S
9
Most frequent letter
I (12)

Questions

How many 10-letter words matching __y____n__ are there?

12. 5 of them are common words.

What is a common example?

BOYFRIENDS is among the common words in this set.