Merriam-Webster's Official Scrabble Players Dictionary includes the 4 letter words jean, jeon, jinn, john and join. Jeon is a valid 11-point Scrabble word that means a monetary unit of South Korea. Jinn is a valid 11-point Scrabble word that means a supernatural being in Muslim mythology.
A four letter word that starts with g and ends with n is gown :)
It might be oxen.
News Nibs Ness
Sandman (starts with S ends with N - 7 letter word)
Boon - an old fashioned word that means gift.
nutrition
Kitten or mitten.
onion
Domain is one of the words that starts with the letter D and ends with the letter N.
Horn
maturation
traction