This is the 1375th most frequent Spanish word.
antiguo
"Antiguo" means "old" or "ancient."
Here, 'antiguo' means 'ancient' or 'old', describing the age and historical significance of the building.
Este edificio antiguo tiene más de 200 años.
This ancient building is over 200 years old.
In this sentence, 'antigua' conveys the sense of something longstanding or enduring, referring to the duration of the friendship.
Tengo una amistad antigua con él, desde que éramos niños.
I have an old friendship with him, since we were children.
Here, 'antigua' refers to something that was previously owned or associated, describing the prior residence.