This is the 564th most frequent Spanish word.
guardia
"Guardia" means "guard" or "watch" in English.
In this sentence, 'guardia' refers to a person whose job is to ensure security, specifically a security guard.
El guardia vigilaba la entrada del edificio.
The guard was watching over the building's entrance.
Here, 'guardia' is used to denote an on-duty emergency or medical staff team available at all times.
El hospital tiene una guardia las 24 horas.
The hospital has an emergency service 24 hours a day.
In this context, 'guardia' signifies a state of vigilance or caution, referring to being alert and watchful in potentially unsafe situations.