In the wizarding world, the concept of Elements primarily refers to the four classical elements of ancient philosophy: earth, water, air, and fire. While the magical community is aware of Muggle scientific advancements, these four foundational concepts remain deeply embedded in magical theory and practice, particularly in advanced disciplines like Alchemy and Transfiguration. They represent the fundamental building blocks of the physical world, which powerful magic can manipulate and control.
The influence and direct manipulation of the four classical elements are evident in numerous spells, magical creatures, and legendary artifacts.
The classical elements form the basis for some of the most fundamental laws and branches of magic.
The inclusion of the four classical elements is a direct borrowing from real-world ancient Greek philosophy and the subsequent European alchemical tradition. J.K. Rowling uses this established system to lend a sense of historical depth and a structured, logical foundation to the magical world, grounding fantastic spells in a recognizable philosophical tradition.