A 3D plot showing the positions of Mars for the next 18 months from now: May 9th 2019
A computational language tries to intrinsically be able to talk about whatever one might think about in a computational way—while a programming language is set up to intrinsically talk only about things one can directly program a computer to do. So for example, a computational language can intrinsically talk about things in the real world—like the planet Mars or New York City or a chocolate chip cookie. A programming language can intrinsically talk only about abstract data structures in a computer.
A computational language like the Wolfram language maintains high-level expressiveness and readability of pseudocode, while still having everything be precise, complete and immediately executable on a computer. Read about computational languages in great detail by the creator of one at https://blog.stephenwolfram.com/2019/05/what-weve-built-is-a-computational-language-and-thats-very-important/