It's not accurate to say there are only four major areas of science. Science is vast and interconnected, and there are many different ways to categorize it. However, a common and helpful way to think about it is through these broad categories:

1. Natural Sciences: Study the physical world and its phenomena.

* Physics: Study of matter and energy, and their interactions. It has branches like mechanics, optics, thermodynamics, and nuclear physics.

* Chemistry: Study of matter and its properties, as well as how matter changes. It includes branches like organic chemistry, inorganic chemistry, analytical chemistry, and biochemistry.

* Biology: Study of living organisms and their processes. It includes branches like zoology, botany, ecology, genetics, and microbiology.

* Earth Sciences: Study of the Earth, its composition, structure, and processes. It includes branches like geology, meteorology, oceanography, and climatology.

* Astronomy: Study of celestial objects and phenomena. It includes branches like astrophysics, cosmology, and planetary science.

2. Social Sciences: Study human societies and their behavior.

* Anthropology: Study of human cultures and societies.

* Sociology: Study of social groups and their interactions.

* Psychology: Study of human behavior and mental processes.

* Economics: Study of how people make decisions about scarce resources.

* Political Science: Study of government and political systems.

* History: Study of past events and their impact on the present.

3. Formal Sciences: Study abstract systems of thought.

* Mathematics: Study of numbers, quantities, and patterns.

* Logic: Study of reasoning and argumentation.

* Computer Science: Study of computers and computational systems.

4. Applied Sciences: Use scientific knowledge to solve practical problems.

* Engineering: Application of science and mathematics to create technology and solve problems.

* Medicine: Application of science to diagnose, treat, and prevent diseases.

* Agriculture: Application of science to improve food production.

Important Notes:

* These categories are not mutually exclusive. There's often overlap between branches of science.

* This is just one way to organize science. Other frameworks exist, depending on the focus.

* Many fields, like environmental science and data science, draw from multiple disciplines.

This framework provides a starting point for understanding the vast landscape of scientific knowledge.