There are over 20 parts to a western saddle. Which 4 do you want to know?
carriage comprises of parts-saddle and apron.
gunpartscorp
Prancer starlight and bell
Part of the saddle, possibly pedals, grips. Parts of the shifters, brake levers.
tree flaps girth straps
A Sybian saddle is a masturbation device for women. It consists of a saddle-like seat containing an electric motor. The woman mounts the saddle and her private parts are stimulate by the strong movement. It can be used with or without attachments that penetrate her.
Saddle joints are primarily found in the thumbs of humans, where they enable a greater range of motion for activities like grasping and manipulating objects. They are not as common in other parts of the body.
seat
The main parts are: frame fork wheels (handle)bars saddle seat post cranks pedals
the author's jump over Pecos's saddle
Saddle, saddle pad, martingale, breast collar, girth and stirrups (both attach to the saddle). Leg wraps are optional and are usually just used at shows. Bridle, reins (attached to bridle) and halter.