But, an aspect depends on the relationship between two planets. But an aspect combines a planet in a sign and in a house with another planet in a sign and in a house. A close aspect can be more defining than a sign and house placement. Of course, this wouldn't be literally true, but for practical purposes it is quite true. This is not only true of conjunctions.
Every aspect colors a planet's expression.
It is true of the harmonious aspects because these aspects indicate internal, automatic ways of being . It is also very true of the dynamic aspects because they are so powerful. The closer the aspect, the more significant it is. Any aspect within one degree is ridiculously important. Any aspect within three degrees is very, very important.