human (Noun) — Any living or extinct member of the family Hominidae characterized by superior intelligence, articulate speech, and erect carriage.
human (Adjective) — Characteristic of humanity. ex. "human nature"
human (Adjective) — Relating to a person. ex. "the experiment was conducted on 6 monkeys and 2 human subjects"
human (Adjective) — Having human form or attributes as opposed to those of animals or divine beings. ex. "human beings" ex. "the human body" ex. "human kindness" ex. "human frailty"