homelessness vs homeless

homelessness and homeless both are nouns.

Word	Noun	Adjective	Verb	Adverb
homelessness	Yes	No	No	No
homeless	Yes	Yes	No	No

homelessness (noun)	homeless (noun)
the state or condition of having no home (especially the state of living in the streets)	poor people who unfortunately do not have a home to live in
	someone unfortunate without housing

homelessness (adjective)	homeless (adjective)
	physically or spiritually homeless or deprived of security
	without nationality or citizenship