be a world away

To be very different from something else. This new school is a world away from the old one I taught at. For one, the kids actually listen! Wow, it's been sunny every day so far! The weather here is a world away from what I'm used to in Seattle. Everything is so laid back here—it's a world away from the bustling city I grew up in.

be ˈworlds/a world away (from something)

be very different (from something): Life in the country today is worlds away from how it was a hundred years ago.