An agora (ἀγορά), meaning "marketplace" in English, was a place in an ancient Greek polis or city-state that played the role of both market and also a forum for citizens. The agora was already a part of a city by the time of Homer (circa 8th century BC). The agora developed with the establishment of city-states after the Mycenaean civilization fell.
The word agoraphobia, derives from agora, and denotes a fear of public spaces, such as the marketplace.
Agora also means a place of assembly in any Ancient Greek state. It is sometimes used in modern language to refer to a crossroads, either metaphorically (the point or concept which links, or is the crossroads of multiple related concepts), or literally, a point at which many physical roads or paths meet.