1‘an electrical mechanism for long-distance signalling’
apparatus, machine, appliance, tool, device, implement, utensil, instrument, contraption, contrivance, gadget, tackle, structure, system
2‘the train's safety mechanism had jammed’
machinery, workings, works, movement, motion, action, gear, gears, wheels, components, motor, engine, power source
informal innards, guts
3‘a formal mechanism for citizens to lodge complaints’
procedure, process, system, operation, method, technique, workings, means, medium, agency, channel, channels, vehicle, structure
We take a look at several popular, though confusing, punctuation marks.