For example, two people may both have a Libra Sun sign, but one may have the Libran Sun in his 12th House, while the other may have his Libran Sun in his 1st house.This could make for two very different types of people.
Do not confuse the wheel of Houses with the zodiac wheel. The zodiac wheel is based on the sun's apparent yearly rotation about our Earth (along the ecliptic), while the wheel of Houses is based on our Earth's 24-hour rotation about its own axis.
The study is based on the distribution of energy in their individual and combined charts. Aries people are strong-willed, adventurous, naturally extrovert, and impulsive. They are content to take second place in the ventures they undertake.
Taureans are quiet, gentle people, but they know their own mind.
The affinity between two individuals is known as compatibility which is also known as Synastry and is the study of the relationship between two individuals using a relative study of their natal charts.
The relationship between their planet positions, signs and houses are analyzed to how compatible they are with each other. A natural-born warrior, fearless and courageous when positive, but foolhardy and reckless when negative, an Aries person is difficult to ignore, highly competitive, hard to beat, in sufferably annoying, but strangely likeable.