Law is a profession that can only be performed by those who have studied the law. The term stems from the etymology of the word "Lawyer" which comes from the Latin "Advocatus" used in ancient Rome as a "Call" to defend those people who interacted in relationships with third parties. It is considered as that social factor that man uses to defend himself in society through the legal norm. Whoever practices law is called a lawyer, a professional licensed to manipulate the law in the different contexts in which it is merited.
Law, or legal studies is studied by people from all over the world in educational institutions that train the student under a learning regime characterized by the different historical nuances of society as far as laws are concerned, it is common to study in depth the legal framework of the nation in which you live, however, many institutions take as a reference the laws and constitutions of other countries in which the moral and ethical values of a lawyer are guaranteed. Even the study of Roman Law in many countries is the basis of the legal profession, since it was their culture that left all the knowledge for study.
On a daily basis we see how the legal profession is applied in daily life, every time it is known that a trial is being held to determine the guilt or innocence of an individual in society, the legal profession is present in each part of those involved, using the law to comply with your goals. In each scenario of society, people can be judged for the decisions or actions they take, but at the time of judicial conviction, there is a legal pattern or structure in which the lawyer intervenes to defend or convict as the case may be.
With the legal profession it is possible to legislate, which is nothing more than the creation of the essential tool of law, the law. A lawyer can help build a compendium of laws and rules that can lead a community of people for good customs.