The article discusses the differences between laser marking, laser engraving, and laser etching. Laser marking is a process that uses a high-intensity laser beam to create marks on the surface of a material, without removing any material. Laser engraving, on the other hand, involves removing material to create a deep engraving or groove on the material’s surface. Laser etching is similar to laser engraving but creates a shallower mark on the material’s surface. The article also explains the applications and advantages of each process, as well as the materials that can be marked or engraved using lasers.