The word “person” refers to an individual human being. A synonym for “person” could be “individual”. An individual emphasizes the uniqueness and separateness of a single human being. For example, “Each individual has their own dreams and aspirations.”
Another synonym is “human being”. This term is more formal and scientific in tone. It clearly identifies a member of the human species. For instance, “Human beings have the ability to think and reason.”
“personage” is also a good synonym. It has a more elevated or formal connotation and often implies someone of importance or distinction. For example, “The gathering was attended by many prominent personages.”
All of these synonyms for “person” help to describe and refer to a single human being in different contexts and with different nuances.