Because I have so much to do and because this subject is well-known, and the Wikipedia page well written, rather than re-invent the wheel I'm quoting here from Wikipedia's "Planets in astrology". When I have more time I'll fill in the corresponding archetypes and equivalences with other symbolic and psycho-c\socio-spiritual systems of thought.
Venus is the ruling planet of Taurus and Libra and is exalted in Pisces. In Roman mythology, Venus is the goddess of love and beauty, famous for the passions she could stir among the gods. In the same way, the calm, beautiful surface of white clouds that the planet Venus presents hides its hot, dense atmosphere and intense volcanic activity! Venus orbits the sun in 225 days, spending about 18.75 days in each sign of the zodiac. Venus is the second brightest object in the night sky, the moon being the brightest.
Astrologically Venus is associated with the principles of harmony, beauty, balance, the feelings and affections, and the urge to sympathize and unite with others. It is involved with the desire for pleasure, sensuality, personal possessions, comfort and ease. It governs romantic relations, marriage and business partnerships, sex (the origin of the words 'venery' and 'venereal'), the arts, fashion and social life. The first-century poet Marcus Manilius,described Venus as generous and fecund, and the lesser benefic.
In medicine Venus is associated with the lumbar region, the veins, parathyroids, throat and kidneys. Venus was thought to be moderately warm and moist, and was associated with the phlegmatic humor. Venus is the modern ruler of the 2nd and 7th houses, but traditionally ruled the 5th and 12th houses - the 5th house of play and the 12th house of self-undoing! Unsurprisingly, Venus is said to have 'joy' in the 5th.
Venus is the planet of Friday. In languages deriving from Latin, such as Spanish and French, the word for Friday often resembles the word Venus (viernes and vendredi respectively). Dante Alighieri associated Venus with the liberal art of rhetoric.
In Chinese astrology Venus is associated with the element metal (or gold), which is unyielding, strong and persistent. In Indian astrology, Venus is known as Shukra and represents wealth, pleasure and reproduction. In Norse Paganism, the planet is associated to Freyja, the goddess of love, beauty, and fertility.
Comments: to be added...