What is the difference between slavery and the slave trade?

Slavery is any system in which principles of property law are applied to people, allowing individuals to own, buy and sell other individuals, as a de jure form of property.
The Atlantic slave trade or transatlantic slave trade involved the transportation by slave traders of enslaved African people, mainly from Africa to the Americas, and then their sale there. The slave trade used mainly the triangular trade route and its Middle Passage, and existed from the 16th to the 19th centuries.

The  government  of ancient  egypt  was a theocratic monarchy as the king ruled by a mandate from the gods, initially was seen as an intermediary between human beings and the divine, and was supposed to represent the gods' will through the laws passed and policies approved

It's considered to be association or connection