Floor vs. ground

[LesserKnownKardashian]

I keep seeing these words used interchangeably; am I the one who misunderstands?
I thought ground is outside; floor is inside, usually covered in some kind of flooring.

See BBC article below for example:
BBC News - Two men charged over alleged assault on Prince Andrew heckler
www.bbc.co.uk/news/uk-scotland-edinburgh-east-fife-63107556

You're right, but the article says "ground". Has it been changed?

I would use floor for anything covered in flooring/man made materials - including pavement. The ground is the natural ground (soil, grass etc) imo.

Mmmm. I think it might have also meant 'to ground' as in brought to ground ie apprehended.

@LaPerduta both are used:

@Cheeselog interesting. To me, pavement etc is ground but I see your point.

Ah yes, missed that one!

Confusing when you live in a ground floor flat!