There are different types of touch communication. Touch can be primitive and transmit affection or aggression between family and close relationships. It can also be ritualistic greetings and departures that people are accustomed to. Another type is helpful touch like checking someone's forehead for a fever. Mothers touch children more than fathers and opposite-sex friends touch more than same-sex friends. There are also different distances between people divided into close and far phases, with intimate, personal, social, and public distances each defining space. Even gifts can communicate messages without being directly spoken.