noun which may take the genitive case particle 'no'
homeless
Used as a no-adjective to describe a state of being without a home.
彼はホームレスの人たちを支援する団体で働いている。
He works for an organization that supports homeless people.
noun
Refers to an individual who is homeless. Often used in social welfare contexts.
駅の近くにホームレスが何人か寝ている。
Several homeless people are sleeping near the station.