Why do people call the ground the floor?

Why do people get het up about other people using what they regard as the 'wrong' word, even when the meaning of what they are saying is perfectly clear?

I speak as someone who has used the word floor when I meant ground, when I would normally have used the word ground but floor is the word that came out.

I think they grew up watching too many American cop series.

Not always indoors, for example forest floor, ocean floor, canyon floor.

Ro60

Agree, but if a police officer shouted that at me I'd certainly hit the deck ?

???
As you’re a women ( I assume) you are certainly more likely to be shouted at by a police officer to hit the deck and especially if not wearing a football scarf. Oh damn- this is Pedants Corner <slinks off promising not to mention MM and PH>

Maybe they are a bunch of drunks who don’t knows their @rses from their elbows?

Agree, but if a police officer shouted that at me I'd certainly hit the deck ?

I fully agree - floor is inside, ground is outside

That’s certainly what I understood, the ground is outside, the floor is inside.