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

shopper

shocker

hackers

slacker

scalper

callers

*Ballers
*

bollard

dullard

drilled

chilled

Delilah

pinhead

hearing

nearing

ringers

Klinger

http://satireworld.com/wp-content/uploads/2013/04/klinger.jpg

lurking

clunker

recluse