"Zodaikos" is Greek for "circle of animals". Zodiac Signs signify how life is guided, through personality, manner, and energy.
Each sign has their element, quality, and polarity, which are all very helpful in understanding the signs' significations and similarities.
The Zodiac Signs represent 30° of sky on the ecliptic (the path the Sun travels from Earth's perspective). Each sign relates to the change of lightness and darkness throughout a solar year and how this energy changes and manifests throughout seasons.