How to call the "host" and "sender" of an embassy?

Question

Let's say Algeria builds an embassy in Benin.

When speaking about this embassy,

• How to call Algeria? (the country that runs the embassy and has the staff)
• How to call Benin? (the country in which the embassy in built)

I am creating a table which has these "host" and "sender" columns, for each embassy of the world. A better, yet short and unambiguous name would be great. Other columns will be Address/Phone/etc.

Answer 1

I think this is clear:

Represented: Algeria

Host: Benin