ARK
The ark is known as the Aron Kodesh (ארון קודש) and it contains the synagogue's Torah scrolls.
We don't know where the ark is and it has never been in a synagogue. It had been in the temple in a room called the Holy of Holies.
The Holy Ark is the place where the Torah scrolls are kept.
It is where the Torah scroll is kept.
To hold the Torah scroll in the synagogue.
Torah scrolls
Perhaps you're referring to the 'ark'. The ark is where the Torah scrolls are stored.
The ark is always positioned so that the congregation in the synagogue faces the Temple Mount. In the UK, this means south and slightly east.
It is placed in the front in the synagogue.
the ark, eternal light and other
It's the curtain in front of the Holy Ark.