Kirchhoff's Current Law (KCL) is applied at nodes. It states that the total current entering a node (or junction) must equal the total current leaving that node. This law is based on the principle of conservation of electric charge.
In contrast, Kirchhoff's Voltage Law (KVL) is applied to loops or meshes in a circuit and states that the sum of the electrical potential differences (voltages) around any closed loop or mesh must equal zero.