The terms "heat" and "hot" are related to each other but have distinct meanings:
Heat: Heat refers to the transfer of energy between objects or systems due to a temperature difference. It is a form of energy transfer from a region of higher temperature to a region of lower temperature. Heat is typically measured in units such as joules (J) or calories (cal) and is associated with the motion and vibration of particles (atoms or molecules) within a substance. It is a quantitative measure of energy transfer and is related to the amount of thermal energy present.
Hot: "Hot" is an adjective used to describe the state of an object or substance when its temperature is high. It is a subjective perception of temperature and is relative to our sense of touch or perception of warmth. When something is described as "hot," it means that its temperature is above what is considered comfortable or normal for the human body. However, "hot" is a relative term and can vary depending on the context and individual sensitivity.
In summary, "heat" refers to the transfer of thermal energy between objects or systems, while "hot" describes the subjective perception of high temperature. Heat is a form of energy transfer, while hotness is a qualitative description of temperature.