4 (number) - Groups of Four

Groups of Four

• Four rules: addition, subtraction, multiplication, division.
• Greek classical elements (fire, air, water, earth).
• Four seasons: spring, summer, autumn, winter.
• Four parts of a day: dawn, morning, afternoon, night.
• Four rocky planets in Earth's Solar System: Mercury, Venus, Earth, Mars.
• Four is the minimal number of contemporary continents: Americas, Eurafrasia, Sahul, Antarctica.
• Approximately four weeks (4 times 7 days) to a lunar month (synodic month = 29.53 days). Thus the number four is universally an integral part of primitive sacred calendars.
• Four cardinal directions: north, south, east, west.
• Four Temperaments: sanguine, choleric, melancholic, phlegmatic.
• Four Humors: blood, yellow bile, black bile, phlegm.
• Four Great Ancient Capitals of China
• Four corner method
• Cardinal principles
• Four cardinal virtues: justice, prudence, temperance, fortitude.
• Four canonical Christian Gospels, attributed to the Four Evangelists (Matthew, Mark, Luke, and John)
• Four horsemen of the Apocalypse: war, famine, pestilence, death.
• Four suits of playing cards: hearts, diamonds, clubs, spades.
• Four nations of the United Kingdom: England, Wales, Scotland, Northern Ireland.
• Four Noble Truths in the Buddhist religion.
• Four estates: politics, administration, judiciary, journalism. Especially in the expression "Fourth Estate", which means journalism.
• Four Corners is the only location in the United States where four states come together at a single point: Colorado, Utah, New Mexico, and Arizona.
• The Fantastic Four: Mr. Fantastic, The Invisible Woman, The Human Torch, The Thing.
• The Beatles were also known as the "Fab Four": John Lennon, Ringo Starr, George Harrison, Paul McCartney.
• Gang of Four is a British post-punk rock band formed in the late 1970s.
• Typically there are four string players in a classical string quartet, usually two violinists, a violist, and a cellist.
• Four rivers in the Garden of Eden (Genesis 2:10–14): Pishon (perhaps the Jaxartes or Syr Darya), Gihon (perhaps the Oxus or Amu Darya), Hiddekel (Tigris), and P'rat (Euphrates)
• There are also four years in a single olympiad (duration between the Olympic Games). Many major international sports competitions follow this cycle, among them the FIFA World Cup and its women's version, the FIBA World Championships for men and women, and the Rugby World Cup.