"Homelessness" is a word with several different meanings. It usually means that a person or family does not have a house or apartment in which to live. That person or family sleeps outdoors or in a shelter. Outdoors, homeless people may sleep in a car or in a structure not meant to be used as a dwelling space (a barn, for example),
Homelessness can also refer to those who do not have permanent homes because of their jobs. In the United States, people in this category have included cowboys, loggers, fishermen, and migrant farmworkers.
Refugees may also think of themselves as homeless even when they have new places to live. This happened in the United States, during the Great Depression of the 1930's. About 1 million people moved to California from the Midwest as the result of hard economic times.