The routine use of "home" when what's really meant is "house" drives me nuts too. Multiple times a day. It's a kind of verbal kitsch, this calling of, say, new, never occupied houses "homes". It's not a home until it's someone's home. Prior to that, it's a house. As an object in space, as a thing destroyed by a tornado, it's a house, even if it's a home also. Yeah, it's subtle, but what I love about English is it's scope for subtlety, and what I rue about it is how easy it is to muck up the vernacular with schmaltzy over-sentimentalized usages. Before you hit the link, hit this one.