Fundamental particles are the building blocks of matter that make up everything we see and know. These particles are tiny, invisible and elusive, and scientists have been trying to understand them for centuries. However, there are many synonyms for these particles that are used in different contexts. They are referred to as elementary particles, subatomic particles, basic particles, and primitive particles. Each term implies that these particles are the most basic components of matter and cannot be broken down into smaller components. About 25 elementary particles have been discovered so far, and they are grouped into two categories, fermions and bosons. Understanding the properties and behavior of these particles is crucial to understanding the nature of the universe.