What is the difference between man and women?

What is the difference between man and women? It seems like simple question, so most of the people will say that the difference is particularly in physiology, appearance (phenotype), genotype and gene. This is only biological view that gender differences are natural, constant and based on sex difference. Another approach supposes that gender does not associate with sex. It connects with the way of person either masculine or feminine behavior. It is also believed that there is no connection in being a man and behaving in a masculine way. This essay will examine different kinds of masculinities based on some main characters from the Billy Elliot movie.