Seven letter words change one or two letter to make a new word

penguin

pungent

Nugents

http://wwwcdn.deeranddeerhunting.com/wp-content/uploads/The-Ted-Nugent-Family.jpg

stunned

detuned

Neptune

petunia

Antwerp

pertain

refrain

frantic

trainer

arraign

arrange

garaged

raggedy

tragedy

triaged

trident

dentite