+**Crust** is the hardened, outermost layer that encloses and protects an object. It can be the baked surface of [Bread](/wiki/bread) or [Pie](/wiki/pie), or the solid skin of a [Planet](/wiki/planet). This defining boundary often differs in composition and texture from its interior.
+## See also
+- [Earth](/wiki/earth)
+- [Baking](/wiki/baking)
+- [Geology](/wiki/geology)
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