One Word - Plus Minus Change Game

A quick word game.
The rules are simple, from the previous word you may add one letter or take away one letter anywhere in the word or change any one letter, you may choose only one option to add, take or change however you must leave a valid word.

Examples.
If the starter word is SPIT.
You might change letter, result = SPOT
or take a letter, result = PIT
or add a letter, result = SPLIT.

Starter word

CAST.

Cat

Pat

path

Bath

Bat

Bit

Bot

Boat

Moat

Moan

Morn

corn

coin

loin

loins

Coins

core

I’m going to ignore the poster above me for not following the rules.

joins

Joint

*for reference the rules are:
add one letter or
remove one letter or
change one letter.