The Foucault Pendulum is a mesmerizing scientific instrument that demonstrates the Earth's rotation. There are various synonyms for the Foucault Pendulum, including conical pendulum, support pendulum, and Foucault's pendulum. It was named after the French physicist Leon Foucault, who designed it in 1851. The conical pendulum is an apt description of the Foucault Pendulum, as it swings in a conical motion due to the Earth's rotation. The support pendulum denotes its method of suspension, where it swings from a stationary support instead of a moving one. Foucault's pendulum is simply named after its creator, and is used to observe the motion of the Earth's rotation. Its synonyms are a testament to its significance and contribution to the field of science.