Etymological

Grandma: How do you even get pneumonia? How do you catch it?

Carter: Isn't it... Oh wait, that's hypothermia.

Grandma: I know it has to do with fluid in the lungs. Fluid. Hey, maybe that's how they named it! Flu... Fluid.

Valerie: Pneumonia, Grandma.

Grandma: Oh, right.

Carter: How did they start spelling that? Why is there a "p" at the front of the word?

Grandma: Yeah, I don't know how they came up with that word! Valerie, do you know?

Valerie: No, I don't know. Do you want me to look it up?

Grandma: No, don't look it up! You always have to look everything up! Don't you ever just sit and ponder something?

Valerie: Not really. If I know the answer is out there and I want to find it, I don't wait to go chase after it.

Grandma: Hmm. Ponder. I wonder where that word comes from.

Carter: I bet it has to do with the word "pond."

Grandma: That's good! You're probably right!

Carter: People'd just be sittin' by a pond, thinking about something...

Grandma: Pondering. That sounds right. I think we should all pick a word and try to find where it came from.

Carter: Like... radio.

Grandma: Well, that's because it goes out, in a radius. <moves her hands outward>

Carter: Is that why? I never knew that!

Grandma: <Laughs>