The International System of Units (SI) is a widely used system of measurement that provides a universal language of measurement. Sometimes, however, it is useful to employ synonyms for this term in order to clarify its meaning or to avoid repetition. Some synonyms for the International System of Units include the metric system, the SI system, and the modern system of measurement. Other possible synonyms include the International Metric System, the International Standards of Units, and the International System for Units. Regardless of what term is used, the fundamental purpose of this system remains the same: to provide an internationally recognized framework for accurate and precise measurement.