Nouns

(n)homeless, homeless personsomeone unfortunate without housing“a homeless was found murdered in Central Park”
(n)homelesspoor people who unfortunately do not have a home to live in“the homeless became a problem in the large cities”

Adjectives

(s)homeless, statelesswithout nationality or citizenship“stateless persons”
(s)dispossessed, homeless, rooflessphysically or spiritually homeless or deprived of security“made a living out of shepherding dispossessed people from one country to another” (James Stern)