I can’t tell the difference between snow & cloud. It’s crap.
Clouds are typically found way up in the sky – they're the white or grey fluffy things you see on a typical day. Snow is the white stuff that falls down
the sky and lands on the ground – when it settles there, you might be tempted to pick it up and throw it at a BBC Weather graphic designer, for example. Hope that helps.
But what about fog? It's white or grey but isn't way up in the sky. However, it doesn't land on the ground and you certainly can't throw it at a BBC Weather graphic designer.
"The same procedure as last year, Miss Sophie?" "The same procedure as every year, James!"