General:
* Individual: A single person.
* Human being: A member of the human species.
* Person: A human being, especially considered as an individual.
* Soul: A person considered as an immaterial and immortal entity.
* Being: A living thing, especially a human being.
* Entity: A thing with distinct and independent existence.
Based on Age:
* Child: A young person, usually under the age of 18.
* Teenager: A person aged between 13 and 19.
* Adult: A person who is fully grown and developed.
* Senior citizen: An older person, typically over the age of 65.
Based on Gender:
* Man: An adult male.
* Woman: An adult female.
* Boy: A male child.
* Girl: A female child.
Based on Occupation:
* Doctor: A person who is qualified to practice medicine.
* Teacher: A person who instructs students.
* Engineer: A person who designs and builds things.
* Artist: A person who creates art.
* Writer: A person who writes books, articles, or other texts.
Based on Character:
* Friend: A person whom one trusts and with whom one has a bond of mutual affection.
* Enemy: A person who is hostile to another.
* Stranger: A person who is not known to the speaker.
* Leader: A person who guides or directs others.
* Follower: A person who supports or admires a leader.
* Hero: A person who is admired for their courage and achievements.
Based on Social Status:
* Citizen: A person who is a member of a particular country.
* Resident: A person who lives in a particular place.
* Neighbor: A person who lives near another.
* Guest: A person who is visiting someone else.
Based on Physical Appearance:
* Beauty: A person who is considered to be physically attractive.
* Ugly: A person who is considered to be physically unattractive.
* Giant: A very tall person.
* Dwarf: A very short person.
Other:
* Victim: A person who has been harmed or injured.
* Witness: A person who has seen or heard something.
* Suspect: A person who is believed to be involved in a crime.
* Criminal: A person who has committed a crime.
* Patient: A person who is receiving medical treatment.
This is just a small sample of nouns used to describe a person. There are many more, depending on the context and the specific qualities you want to emphasize.