This is a very controversial topic, when chaos is the rule rather than solving the several issues coming from the application of these two words in our society. In appearance, these two words sex and gender mean the same for many. But, even when most people and perhaps dictionaries relate them as synonimous. Point is that such is not what happens in reality and is practically a duty to work on it, so people can be taugh in a clear way about their differences. After their differences are settled, their correct understanding might finally solve the ethics, morality and justice errors involved when laws are made. My proposal is starting with de proper definitions of those words, Later, how to apply those in minors and adults, and so forth.