This is weirdly specific, but I've sadly been in more than one internet "discussion" where a CNC laser cutter is shown in a video, and some knob end pops up in the comments and says "ThAt'S a PlAsMa CuTtEr NoT a LaSer sToOpId".

For about ten years I set up, operated, programmed, maintained, and repaired both plate and tube lasers made by NTC, Mitsubishi, Amada, Trumpf, Han Kwang, Mazak, and BLM. I know enough about industrial lasers to make them boring. I can tell if a shop has a laser just by driving by. A plasma cutter works different, sounds different, and cuts different than a laser, and even someone who knows nothing about either process can see there is a difference.