I learned something this morning. Carter took off his footie pajamas and when I told him he needed *some* clothes because it's chilly, I asked him if he wanted to wear pajamas or pants and shirt. He told me, 'jammas'. I grab a new set of the footed kind, and he tells me they are "not jammas!" I ask him to show me what he wants and he grabs a pair of two-piece PAJAMAS.
I said, "Aren't these (the footed ones) pajamas?"
"No, those PJs!"
Ah, gotcha. PJs and pajamas are not the same thing. Carry on.