Etymologically this word comes from the Latin "Liberatio" which refers to the fact of setting something or someone free. To speak of liberation implies the breaking of the corporal and spiritual ties that prevent any individual, animal or natural phenomenon the opportunity to evolve or develop in its entirety.
For example "The young man felt a great liberation when he finished his presentation" , "At the end of the act countless doves were released in the square" , "Feminist leaders marched for women's liberation" . "The government launches the people's liberation operation . " When a person has been the object of liberation, it means that this person is free, has freedom, and is no longer oppressed and bent to the will of another.
The release is a word often used in everyday life to mean that someone has removed an load off me, something that kept him in a state of concern. On the religious level for Christians, when a person complies with the sacred sacrament of confession, it means that once their sins have been confessed before God, and this through the priest absolves them, the person is freed from all those sins that harm the spirit and away from God.
In ancient times there were slaves who were subjected and deprived of their freedom for many centuries, to be a slave there was no difference, they were simply slaves if they had been born that way, that is, if you were the son of slaves, then you were also a slave, or also if the person had committed a crime. For a slave to achieve his liberation, this would have to be given by the will of the master, or by decision of the law.
On the other hand, this term is also used when a person receives a receipt as proof of the cancellation of a debt, for example “Mr. Pérez received the mortgage release receipt from the bank, considering the debt he had with the bank ” .