What are the two signal words used in the Globally Harmonized System (GHS)?

The two signal words used in the Globally Harmonized System (GHS) are "Danger" and "Warning." These signal words are critical components of hazard communication as they serve to indicate the level of severity of the hazard presented by chemicals.

"Danger" is used when the chemical presents a more severe hazard, indicating a higher degree of risk. "Warning," on the other hand, signifies a less severe hazard compared to "Danger" but still warrants careful attention. The distinction between these two terms helps to quickly communicate the nature of the hazard to those who may come into contact with the substance, allowing for appropriate safety precautions to be taken.

The other options provided do not contain the correct terminology as specified by the GHS framework, which emphasizes the importance of uniformity and clarity in hazardous communication outcomes across various settings.