What is the difference between a Greek Temple or Christian Church?

The difference of them is that (in English) "church" first means the gathering of the people of God, and secondarily the building used by them for meeting to worship. Usually in English, "temple" refers to a non-Christian house of worship, as for example Jewish, Buddhist, Hindu, etc. It's interesting to note that in Mexican Spanish "church (iglesia)" almost always refers to the group of believers and worshippers, while "temple (templo)" almost always refers to a house of worship, both Christian and non-Christian