Groove welding involves joining two pieces of metal by melting their edges and fusing them together. To create a groove weld, a V, U, or J-shaped groove is typically prepared on the edges of the metal pieces.

Fillet welding is a type of weld where two pieces of metal are joined at right angles to each other, forming a triangular cross-section. Fillet welds are applied along the junction of the two workpieces.