Are solution and solvent synonyms? Why?

 Are solution and solvent synonyms? Why?

The density of NaCl is 2.165 g/mL, what volume of water would 200.0 g of solid NaCl displace from a container that could hold only 1.000 L

What mass of water in kg would remain in the container after 200.0 g of NaCl was added to the 1.000 L of water in a 1.000 L container? (Assume the density of water is 1.00 g/mL)