It's important to note that there are actually two types of crust:

* Continental Crust: This is the thicker, less dense crust that makes up the continents. It's primarily composed of granite and other igneous rocks.

* Oceanic Crust: This is the thinner, denser crust that makes up the ocean floor. It's primarily composed of basalt and other volcanic rocks.

So, while "crust" is the general term for the top rocky layer, the specific type of crust (continental or oceanic) will depend on the location.