This is the 1123rd most frequent Spanish word.
aviso
Notice, warning, or announcement.
In this sentence, the word 'aviso' is used to mean a physical written notice or sign as information for the public.
El aviso en la puerta decía que el restaurante estaba cerrado.
The notice on the door said that the restaurant was closed.
Here, 'aviso' is used in the context of a verbal warning or alert about a potential issue.
Te doy un aviso, cuidado con ese perro.
I give you a warning, be careful with that dog.
In this instance, 'aviso' refers to a formal communication or announcement provided by an entity.