Name explain, defense and Frigidaire

I'm watching YouTube today, and come across name explain talking about common words.

When he got to the word defense, it was clear that a fence is to keep things out or keep things in. A fence is for defense.

But it wasn't until just now, at 11:55 p.m., listening to the radio at 100.3 when I realize that Frigidaire was a nice way of saying frigid air. I never noticed that. I always thought of it like a 50s word like Bel Air or Cavalier or Deluxe. But never realize that it was so well named.

Thanks Steve Tyrell.