This is the 3210th most frequent Spanish word.
antigua
"Antigua" means "old" or "ancient" in English.
In this sentence, 'antigua' is an adjective meaning 'old' or 'antique', describing the house's age or style.
La casa antigua tiene mucho carácter.
The old house has a lot of character.
Here, 'Antigua' is a proper noun, referring to a specific place: the city of Antigua.
Antigua es una ciudad colonial en Guatemala.
Antigua is a colonial city in Guatemala.
The term 'antigua' acts here as an adjective meaning 'former', modifying the noun 'amiga' to indicate a friend from the past.