Synchondroses and symphyses are:
synovial joints
cartilaginous joints
fibrous joints
condyloid joints

cartilaginous joints

Explanation:

The joint system is formed by the joints, which can be defined as the joining region between two or more bones. All bones in the body except the hyoid bone are articulated with at least one other bone. There are several types of joints, among them, the cartilage joints, those that have cartilage between the bones. If this cartilage is hyaline, the joint is called synchondroses; if the cartilage is fibrous, the joint is called symphyses.

The joints are responsible for holding the bones together and allowing the skeleton to move.

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