If you are meaning how does an insoluble compound differ from a soluble compound, an insoluble compound does not dissolve in a given solvent, usually water, and a soluble compound does dissolve.
Starch
You think probable to a precipitate, an insoluble compound.
A compound can be insoluble or not; but not the cation. You think probable, for example, to silver halogenides.
AgCl
If you are meaning how does an insoluble compound differ from a soluble compound, an insoluble compound does not dissolve in a given solvent, usually water, and a soluble compound does dissolve.
Yes, it is insoluble in water
Starch
You think probable to a precipitate, an insoluble compound.
A compound can be insoluble or not; but not the cation. You think probable, for example, to silver halogenides.
No, it is an insoluble compound.
AgCl
An ionic compound will precipitate out of solution if it is insoluble in water.
This is an insoluble or covalent compound.
precipitate
The product is an insoluble compound.
Because it is insoluble in water.