1) It literally means “church” or “parsonage”. A church is a specific building where religious ceremonies are held and where people use to visit regularly to pray to their God. Churches relate mostly to the Christian religion, and are usually owned and maintained by the rules of the religion in the concrete country. In practice, the word participates in the phrase “ecclesia ecclesise decimas solvere non debet”. It literally means “the church should not pay tithes to the church”.
2) It means an assembly of citizens in ancient Greek “polis”, i.e. city.