What is relatively?

Relativity is a theory in physics developed by Albert Einstein that explains the relationship between space and time. There are two types of relativity: special relativity and general relativity. Special relativity deals with objects that are moving at constant speeds, while general relativity deals with objects that are accelerating or experiencing gravity. The theory of relativity has numerous implications and applications in physics and other fields. It has been confirmed through various experiments and observations, and is considered one of the foundational pillars of modern physics.