What is the Meaning & Definition of affection

Affection is the Act through which a human being professes him his love for another human being, but it is also very common that the recipient of that love is not only another individual, and can materialize and profess also by a pet for example. With respect to the origin of the same affection always will be the result of a process of social interaction between two or more organisms and which is characterized by the feedback, i.e. affection is something that I can give to, or people who wants and they just receive my show also can answer them and repay them, showing me that they received them and that they also feel the same.
Traditionally, affection has taken the form of a kiss, a caress, a gesture, attention and care, among other forms, and is an issue that is intimately linked to the universe of emotions.
Although it is not so critical as the air we breathe, and that allows us to remain part of this world, the affection is essential for human beings, is an intrinsic need to put any other physiological or spiritual needs and up to which, if necessary, any human being will fight to preserve it or get it.
Although the affection will be necessary at any stage and time of life, there are two key moments in the life of any person, such as childhood and in disease, in which affection is essential now is to develop and grow in optimal conditions and harmony, in the first case and to overcome either to make any condition more bearable. Because undoubtedly, until the more serious disease, terminal, if it is crossed with the affection of all the people, it will be less painful.
The affection is not something that flows, moves, and is already, ready chicken but, on the contrary, affection will always require the effort, or capable, we are not aware of the effort we do constantly when we help each other or do things to give you greater well-being to your life, but without a doubt, the effort is and is an essential part and without which there would be no affection. Because even the smallest thing to do to show each other our affection and we want it, such as buying the chocolate we know likes, will involve an effort, on the one hand an effort economic and the other time and travel to the place where they sell it.