Subunits refer to the individual components of a larger structure or complex. Synonyms for subunits include building blocks, modules, components, segments, elements, particles, pieces, units, and fragments. These terms describe the smaller parts that make up a whole entity, whether it be a protein, cell, or machine. Subunits often work together to create something larger or carry out a particular function. They can be interchangeable and may vary in size and shape depending on their context. Understanding the synonyms for subunits is essential to discerning the structure and function of complex systems in science, engineering, and other fields.