I’d say that not equivocating them is sophistry. In both cases, someone takes a deliberate action that they know will result in an innocent person’s death. I fail to see why the exact mechanism should be so important.

If you’re shot, and I pull up a chair and watch you die without saying a word or helping in any way, especially if I get paid extra for refusing, I’m not sure if I’d call it murder, exactly, but I bet your family and friends would describe me as a killer.

Pulling a trigger can not kill someone. Bullets kill people. /s