Four letter words--Change 0 to 1 letter to make a new word

colt :horse:

bolt :running_man:

loft.

flat.

late.

pelt.

pled.

sled.

dell :deciduous_tree:

fell.

cell

lace.

cake.

peck.

keep.

perk.

reap.

rake.

Kale!

fake.