RUDE BOY
Space is the Place
The distinction would be a portable (therefore cordless by our definition) that is too big or unwieldy to be stealth. You can certainly walk around the house or yard with it because no cord, but you might be unlikely to use it on the street in non-rec places. Nothing is changing, it was just a thought.
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This reminds me of different terms used for telephones, at home you may have a cordless 'portable' that's just a home phone as compared to a cell phone that would be both portable and mobile for use anywhere.