Final answer:
The term for a sacred place that is specially reserved and enclosed is 'Temenos'. It encompasses the entire sanctuary complex and is separate from 'naos', which is the inner sanctuary of a Greek temple.
Step-by-step explanation:
The place of ground that is specially reserved and enclosed as a sacred place in the context of Greek religious architecture is known as a Temenos. This term refers to an enclosed space that was set apart from the ordinary, typically for a sanctuary or sacred precinct. The Greek temple was the center of worship and often enclosed the naos, which housed the cult statue of the deity. Not to be confused with the naos, which is the inner sanctuary of a Greek temple, a Temenos could encompass an entire sanctuary complex, including the temple and its surrounding altars and buildings. Examples of the significance of sacred and enclosed spaces include the Hekatompedon during the Archaic-era Acropolis and the Temple of Athena Nike, which contained a single naos for the cult statue.