How do endothermic and exothermix reactions differ

An exothermic reaction is a reaction that releases energy either in the form of light or heat. In other words,  An example of an exothermic reaction is steal rusting.

A endothermic reaction is basically a chemical reaction that absorbs heat or brings in heat, light, or sound.

answer; /// i believe the correct answer is (reactants);

endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d