In a Brit context, homeless encompasses both rough sleeping and sofa surfing. There's countless homeless who aren't sleeping rough on the streets but are takin

In a Brit context, homeless encompasses both rough sleeping and sofa surfing. There's countless homeless who aren't sleeping rough on the streets but are taking space, unofficially in someone's spare room, or literally on their sofa or floor. How are the two forms of homelessness distinguished in US usage? Rough sleeping is as it suggests: Sleeping outside, sleeping bag in shop doorway, tent, abandoned building, under the railway bridge etc.