A hammer drill is a professional power tool that combines rotation and powerful impact, mainly used for efficient operation on hard and brittle materials such as concrete, brick, and stone.

An angle grinder is a handheld power tool that uses a high-speed rotating thin grinding wheel or various discs for work. Unlike a hammer drill, it doesn't "impact" the metal; instead, it relies on extremely high linear speeds for cutting and grinding, earning it the nickname "the Swiss Army knife of metalworking and polishing."

In China, a marble cutting machine specifically refers to a handheld cutting machine used for cutting stone and tiles. Its professional name is stone cutting machine or tile cutting machine. Essentially, it's a specialized circular saw, optimized for brittle, hard, and wear-resistant non-metallic materials.

Core Definition: A marble cutting machine is an electric tool that uses a diamond saw blade at high speed to make straight or shallow groove cuts on materials such as stone, tiles, and concrete. It emphasizes cutting efficiency and precision, making it an essential tool in the decoration and stone processing industries.

Garden shears are hand tools specifically designed for pruning plants. Their core function is to precisely and cleanly cut the branches, leaves, and flowers of plants to promote healthy growth, shape them beautifully, and remove dead or damaged parts.