The 12 signs of the zodiac, which most people are familiar with, can be classified into four elements:
Fire: Aries, Leo, SagittariusThey are full of energy and take the initiative to begin new ventures.
Earth: Taurus, Virgo, CapricornThey like to be stable and approach projects in a steady manner.
Air: Gemini, Libra, AquariusThey like to learn and socialise with others.
Water: Cancer, Scorpio, PiscesThey are caring and full of compassion.
Fire and air signs tend to work well together, as do earth and water. Having said that, earth can give air a structure to manifest the ideas that are gathering in the ether. Air can offer logic to water, and water can add a touch of sensitivity to air.
Image courtesy of exsodus (earth); Andy Woolridge (fire); criminalatt (air); zirconicusson (water)/FreeDigitalPhotos.net