there are a number of parts with names that are pretty logical and help to understand how cars work. Slang words aside, like a spider hose, some stuff just makes sense. Namely the brake booster.

The brake booster plays an important role in stopping ... and the temperature of engine parts rises, leading to pre-ignition ...

Continental says a complete separation of the piston and push rod could occur, which means the mechanical coupling of the brake pedal and brake booster ... The defective parts were installed ...