Except that 'Wordsmithing', in most of your examples is actually useful in professional terms. Let me break it down:
Lethal Force - Force that death is a reasonable, even 'usual' result from. Standard firearms, fragmentary explosives, etc...
Nonlethal - The use of this term is actually depreciated in the force-continuum. It's a sad fact that humans can be both incredibly resilient and incredibly fragile. A disabler that works on a guy able to cut his own arm off that's trapped by a boulder and apply a tourniquet before hiking 26 miles to get to medical care is probably going to be lethal to a 90 year old diabetic great-grandmother. Worse, it's not always apparent who's 'fragile' and who's not.
Less-lethal - The replacement term. It's still potentially lethal, so care should be employed in it's deployment, but as long as you follow the directions, your department shouldn't kill anybody with it any given year.
WMD: Weapon of Mass Destruction. Now, I'm old school with this one, and demand that it be NBC - Nuclear, Biological, or Chemical. And the last is iffy as well. In order for me to count it as a WMD, it needs to be able to destroy city blocks of people, or at least kill more people than any individual practical conventional bomb. I dislike calling a pressure cooker bomb a 'WMD'. So I'd say on a 'killzone' requirement to be a WMD: Several blocks radius OR 'significant' primary duration in time. IE, as a direct intended effect from the bomb, it will keep killing people who enter the area for a significant amount of time after deployment, not just from hazards like structurally compromised buildings.
IED: Improvised Explosive Device. As opposed to a non-improvised one. A very important distinction during my time in the military. Standard munitions have standard means of disarming and disposal. EOD(Explosive Ordinance Disposal) rolls up on a Mark 82 500 pound bomb(or it's Russian equivalent), they know how to make it safe. All that goes out the window when it's an IED. Think of it like a paperwork thing - for a car you put make & model. For a bomb you'd do the same, but IED = 'home built'/unknown/unlisted. So your going 'It's a BOMB' is like saying 'It's a CAR' when I say that a Honda Civic was in an accident.