is when something is hot is it called heat and what is it?

a hot object has a high temperature and has a high thermal energy.

"heat" is ambiguous, and sometimes means high temperature and sometimes means high thermal energy, totally different things, so you have to look at context.

Temperature is a measure of the average kinetic energy of the atoms or molecules in the system.

technical definition: Thermal energy refers to several distinct thermodynamic quantities, such as the internal energy of a system; type of energy transfer (as is work); or for the characteristic energy of a degree of freedom in a thermal system.

basically, two different objects can have the same temperature, but different amounts of thermal energy.

hot is an adjective describing the temerature of an object or system compared to its surroundings

heat is a verb meaning to add thermal energy to an object or system

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