Change one letter.

[Odds]

Gist

 

[Mottie]

Gust

 

[Nige F]

gurt

 

[Mottie]

Hurt

 

[Odds]

Hurl

 

[Mottie]

Curl

 

[Nige F]

curt

 

[Mottie]

Cart

 

[Justin Passing]

Cert

This is too trivial with 4 letters. 5 is more fun?
carts

 

[Mottie]

Cert

This is too trivial with 4 letters. 5 is more fun?
carts

You mean just add an S at the end of each word?

Celt

 

[Odds]

Cult

 

[opps]

cull

I resisted the urge to use n as the 3rd letter.

 

[Mottie]

Bull

 

[Anon_E_Mouse]

Ball

 

[opps]

Bail