Safety is our first concern

We bought a new telephone. Our phone in the kitchen was just a crappy phone. It was hard to read the display and the range and battery life were awful. So I bought a new cordless phone. What I found what that when you buy a cordless phone, most of them are called "dual handset" phones. I wasn't sure what that meant, but I forged on. Now that it's here, I open the box and inside are two phones. What does it mean that this is dual handset as opposed to two phones? The only difference I can see is that only one of them plugs into the telephone cord on the wall. Is that what makes something a "phone" as opposed to a "handset"? Since when? I think people consider a phone to be something you use to talk to other people, not something you attach to the wall.

As for safety, the warnings here are minimal, but there was one about not using the phone during a lightning storm because of "a slight risk of shock." First of all, if you look at the wire that attaches to the phone it's not even capable of carrying household current. If lightning went through it you would just have a molten mass on the counter. But even more to the point, we're talking about a cordless phone here. You're not even physically attached to the wire. How are you going to get shocked? Maybe they mean don't use it outside under a tree during a lightning storm. Sounds like a plan.