Tracks area overview – Logic Pro X
The Tracks area is where you arrange regions to build your project. The Tracks area, located in the center of the Logic Pro main window, shows a visual representation of time moving from left to right. You build your project by arranging regions in rows, called tracks, that run from the beginning to the end of the Tracks area.
It’s like the roadmap.
Projects overview – Logic Pro X
A project is a Logic Pro document that contains all of your recordings, the location of media files you add, and all the changes you make. You start working in Logic Pro by creating a project, or opening an existing project. You can have multiple projects open at the same time, and transfer media and other data between them.
This is a good, brief overview of what a project is.