please explane to me the definition of thermodynamics and its part?

Thermodynamics is the branch of material science that arrangements with the connections amongst warmth and different types of vitality. Specifically, it depicts how warm vitality is changed over to and from different types of vitality and how it influences matter. 

Warm vitality is the vitality a substance or framework has because of its temperature, i.e., the vitality of moving or vibrating particles