Solid solid solution?

No. A solid-solid solution is called an alloy.

A homogeneous mixture of two solids, like a metal alloy, or (possibly) two different atomized solids as powders mixed together (although that would probably still only qualify them as mixtures rather...

solid-solid

when a solid disappears in the solution we can say the solid?

A precipitate is a solid in a solution. The precipitate will not dissolve in the solution, it is insoluble!! The opposite of a precipitate is a solute.