eli5 why is the caspian sea considered a sea and not a lake?

Question

I mean it’s completely land locked why isn’t it considered a lake?

In: 2

Answer 1

If we want to be technical, it should be considered an ocean because it has no outflows. Although by that logic, the Dead Sea, Lake Chad, and Great Salt Lake are also oceans.

But the people who first called it a “sea” didn’t know any of that. They just called it a “sea” because its a huge body of salt water.