If during the reaction heat and light are released only some kind of reaction?

According to the thermal and light effect, chemical reactions are divided into exothermic and endothermic chemical reactions. If, in the process of a chemical reaction, light or heat is released from the substances that have entered into it, then such a chemical reaction is exothermic. If, on the contrary, in order for a chemical reaction to take place, it needs to increase the temperature, then such a reaction takes place with heat absorption and is endothermic. The light indicator is determined in the same way as the temperature one.