Floor is indoors. Ground is outside.

[PatNorman]

I hate the constant use of floor when it is used to mean outside - street, tarmac, turf, pavement etc. It’s even now been adopted by newsreaders.
It makes my blood boil.

Agree!

It irks me too OP.

I agree too, although I haven't heard it used that way. When I do, I shall be cross on your behalf

Yes, and "chair" instead of sofa.

Cement instead of concrete annoys me..

I have only ever heard this in England. (I am Irish but lived England for years) and it still confuses me.

The other one is "indoors" meaning at home. We stayed indoors at the weekend. Doesnt mean they didnt actually not put their feet outside, just means they didnt venture out socially.

@MaisieMaisie I am also Irish and I'm confused at your confusion. What exactly are you confused about?

"She fell on the floor" to me, means she fell inside, on an internal floor. But people use it as on the footpath for example. Well, the footpath is not floor!

"Indoors" is inside, under a roof. Not a term for the opposite of going out socialising.

Does that help FancyPants?

Ground/floor annoys me, as does the use (where I live) of roof, when they mean ceiling.

My mother used to talk about getting a decorator round to "paper her roof".