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

bone.

Bond 007

bend.

band :star_struck:

sand.

sank :ship:

sane .

asea :ocean:

easy :smiley:

slay.

play :video_game:

pale :white_circle:

leap!

plea.

Help!

hole 0

halo :innocent:

hale.

ache :frowning_face:

chai.