animal
a word that starts with k and ends in n is known
Domain is one of the words that starts with the letter D and ends with the letter N.
One word that starts with "s" and ends with "n" is "salmon."
pun
Sandman (starts with S ends with N - 7 letter word)
nonintervention
"again"
A four letter word that starts with g and ends with n is gown :)
nutrition
norm
nurtured
Bassoon