The terms "911" and "119" function as proper nouns. They are the specific, designated names for emergency telephone numbers that identify distinct public safety and response systems in different countries. The word "dan" is a conjunction, equivalent to "and" in English, used to link these two proper nouns into a compound subject or noun phrase.
The number 911 serves as the universal emergency number in North America, including the United States and Canada. It is a centralized system designed to dispatch police, firefighting, and emergency medical services. In contrast, 119 is the emergency number used in several other nations, though its function can be more specialized. For instance, in Japan and South Korea, 119 is primarily designated for fire and ambulance services, with a separate number (e.g., 110 in Japan, 112 in South Korea) used to contact the police. In the People's Republic of China, 119 is exclusively the number for the fire department.
Classifying these numbers as proper nouns is functionally significant. It highlights their role not as quantities but as unique identifiers for critical public infrastructure. The practical implication of their distinction is crucial for global public awareness, particularly for international travelers who must know the correct local designation for emergency assistance. This distinction also reflects different national strategies in emergency management: the integrated, single-point-of-contact model of 911 versus the specialized, multi-number systems where 119 is a key component.
