Homeless. What comes to mind when you hear that word? The Housing and Urban Development definition to be homeless is to have stayed last night in one of four locations or situations.   That's a place not fit for human habitation, like under a bridge or a skyway or bus stop. An emergency shelter would be one of those, transitional housing or if you're exiting an institution like a prison or a hospital. There is a vast diversity of situations that exist in homelessness. Some may even challenge some assumptions you have about "homelessness."