What is the differnce between thermoplastics & thermosets referring to thier inter & intra molecular bonding?

please this is urgent other differences ar e acceptable as wellWhat is the differnce between thermoplastics %26amp; thermosets referring to thier inter %26amp; intra molecular bonding?Thermoplastics can be re-melted and manipulated ad infinitum. Thermoset plastics are internally cross-linked, and cannot be remelted.