A framing hammer and a regular claw hammer differ primarily in their intended use and design. Framing hammers are larger and heavier, designed for heavy-duty tasks like framing houses or construction work. They often have longer handles for increased leverage and a larger striking face for driving large nails or spikes. In contrast, a regular claw hammer is a versatile tool suitable for various carpentry and household tasks, featuring a curved claw for nail removal and a flat face for driving nails with precision.