The names Acropolis and Parthenon are often linked together and sometimes used interchangeably.
As a Closet History Geek, I have newly discovered that in ancient Greek cities, the Acropolis literally means "upper city", the name for a fortress, containing the chief municipal and religious buildings.
The Parthenon is the most famous building in the Acropolis in Athens. It is a religious temple that the Athenians built for the Greek Goddess Athena.
The Acropolis is a UNESCO world heritage site.