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

saunter

tundra

Playing off saunter since tundra has only 6 letters.

taunted

detente

teeters

seethes

esthete

threats

theatre

shatter

shafted

flashed

shifted

details

stellar

flashed

declaws

You can’t make flashed from stellar in two, you need an f,h,d, but it’s done.

Playing off declaws

swaddle

welders

Sorry about ‘flashed’ upthread. Somehow I duplicated a post from twelve hours before.

In play:

dweller