And since, well, some doctors are called "auto mechanics of the body," I started making a list of tools and terms that sound like they could go in either profession -- medicine or car repair.
So far my list includes the peak flow meter, front fascia, nebulizer, curing lamp, 4x4, clean-catch, head gasket, pacer leads, valve grinder, hepatic duct, surgi-lube, colposcope, universal joint, and of course, a Hemi.
I'm sure there are many more such terms, especially within the realms of orthopedics and ... emissions.