Science can be described as a system of knowledge concerned with our physical world and its phenomena entailing systematic experimentation and unbiased observation. In other words, science deal with the pursuit of knowledge that covers general truth or fundamental laws' operations. There are numerous branches of Science. 

First, there is a physical science that involves the inorganic world. It comprises the fields of physics, astronomy, chemistry, and Earth Sciences. On the other hand, there is biological science, such as medicine and biology. It studies the organic world of life along with its processes. Furthermore, social sciences is also another branch of Science that deals with cultural and social aspects of the behavior of humans, such as economics and anthropology. 

You can think of science as both the knowledge itself like whatever has been discovered so far and the process of acquiring it through observation, hypothesizing, and experimentation. Processes and knowledge are said to be interdependent. It means that the knowledge we get depends on the process through which we got it, such as the methods that were used and the questions that were asked. 

Science can be classified into a few groups, which are: 

Natural science: 

It includes biological or life science, which involves the study of living organisms. Natural science also includes physical science like the study of material physics, such as chemistry, space science, physics, etc.

Formal science: 

It deals with the study of mathematics and logic. 

Social science: 

It involves a study of people and society, such as psychology and anthropology. 

Applied science:  

It includes the disciplines that depend on science to find out new information. It uses scientific knowledge for the development of new applications like robotics, engineering, medicine, and agriculture.  

In its first sense, Science can be understood as "the sum of knowledge" and more specifically as a systematic enterprise of construction and organization of knowledge in the form of explanations and testable predictions. Following the technique at the level of its history, it develops in the West through works of a universal nature based on facts, an argument, and methods which vary according to whether they are from observation, experience, ' hypothesis, or logic of deduction, or induction, etc. When we divide science into different fields, or disciplines, we then speak of sciences in the plural, as in this opposition between hard sciences and human and social sciences or again this other, between formal sciences, natural sciences, and social sciences.

Nothing, science has “brought nothing to” society.

Science is knowledge (from the Latin “scientia” = “knowledge”).

However, what is called “society”, which is the set of human beings organized around a goal whatever it may be, is structured by the set of knowledge that the group considered has acquired.

So science is what spawned society, literally. Conversely, society is what protects science, knowledge.

If knowledge were to be lost, society would disappear with it. As was the case for the Maya civilization with the destruction of the Codex by the conquistadors, the case for the disappearance of the Alexandria library destroyed in 48 BC. J.C. and the Hellenistic period (of Alexander the Great) which was linked to it ends just after in 30 BC. JC, etc.

Human history is full of these "oversights" immediately followed by the disappearance of those who carried this knowledge, and the links that united them.......

Amidst black seas of infinity lost somewhere between immensity and eternity lies the planet we call home, Earth and on this planet standing at the apex of intelligence are humans. Wanting to touch the surface of an eternally unfathomable infinity, the pursuit and culmination of knowledge has been a natural priority, a quest of human beings since the beginning and at the crux of this pursuit lies science. 

While science can be described in a variety of ways, at its core it is the analysis, testing, and development of theories and views of the world around us. 

Because the world is such a huge place, it is impossible to examine it with just one word or category, which is why science has been divided into fields such as mathematics, physics, biology, and chemistry, each concentrating on a different aspect of our reality.

According to my definition, science is everything that is based on facts and figures. If you can prove that gravity exists, it is science. If you can prove that X is equal to Y, it is also a sort of science. Everything that is proved and applicable to a large majority, and is accepted is science. It doesn't necessarily have to contain information only about the world, but also its inhabitants. Biology and medicine are all science. And so this is exactly why the opposite term of pseudoscience exists. If something isn't based on proper facts or figures, it will either be considered a soft subject (a soft science) or if there are too many contradictions, it will be known as pseudoscience. For a very long time, psychology wasn't considered a science but since it has deployed standardized experimental measures for its findings, things have changed.