TGA shows solvate formation-can be determined with 100% certainty subject to the users experiences and skills.

DSC shows extra full endotherm of cocrystal-cannot be as certain as that by TGA.

scxrd shows different cocrystal-different diffraction peaks can and can ONLY conclude a new physical form, which can, however, be a different polymorphic form, salt form, or cocrystal form, if applicable.