What are the 2 types of movable and immovable joints?

Movable joints, also known as synovial joints, include hinge joints (like the knee and elbow) and ball-and-socket joints (like the shoulder and hip). Immovable joints, or fibrous joints, consist of sutures (found in the skull) and syndesmoses (like the joint between the tibia and fibula). These joint types play distinct roles in providing flexibility or stability to the skeletal system.