Yin - Yang Terms

In Europe, Yin-Yang is frequently seen as a simple dualism between:
Yin Yang
Female Male
In China, the role of Yin-Yang is more complex. The contrast is between:
Yin Yang
Moon Sun
Father Son
Tai Qi Tai Chi
In the system of Fuxi: The Limitless (Wuji) produces the delimited, and this is the Absolute (Taiji) The Taiji produces two forms, named yin and yang The two forms produce four phenomena, named lesser yin, great yin (taiyin also means the Moon), lesser yang, great yang (taiyang also means the Sun). The four phenomena act on the eight trigrams (ba gua), eight eights are sixty-four hexagrams. http://en.wikipedia.org/wiki/Bagua_(concept)
Yin and Yang also reflect a contrast in a context of 3 Treasures:
Jing Shen Qi
Essence of Life Spirit Energy, Breath
cf. the 3 Gunas:
Sattva Tamas Rajas
Yin Yang
Cold Hot
Soft Hard
Darkness Brightness
South Bank of River North Bank of River
North Side of Mountain South Side of Mountain
 yin refers to “a closed door, darkness and the south bank of a river and the north side of a mountain.” Yang refers to “height, brightness and the south side of a mountain.” http://www.iep.utm.edu/y/yinyang.htm
Four (4) possible states of imbalance:
Preponderance (Excess) of Yin
Preponderance (Excess) of Yang
Weakness (Deficiency) of Yin
Weakness (Deficiency) of Yang
Xun, Kan, Gen, Kun - Qian, Dui, Li, Zheng
Qian, Dui, Li and Zheng areYang
Xun, Kan, Gen and Kun are Yin.
Qian and Dui are Tai Yang.
Li and Zhen are Xiao Yin.
Xun and Kan are Xiao Yang.
Gen and Kun are Tai Yin."
Yin Yan
Ming Hsing
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