The different parts of an ox wagon?

yoke, single or double
wagon tongue
harness, reins
wagon box, with or without driver’s seat, with or without hinged “gate” at the back
axle or axles
wheels
wheel hub
grease bucket for wheel axle grease
friction break (piece of wood on a pivot that you could move into the wheel edge to “slow it down/stop it.”
fittings for hoops from side to side to drape a cover over (optional)
cover of canvas or cotton (optional)
whip or goad
water barrel and fitting to the side of the wagon box
tool box and fitting to the side of the wagon (optional)