The term "false ribs" refers to the lower ribs that do not directly attach to the sternum. They are also known as the costal cartilage ribs or the vertebrochondral ribs. However, there are several other synonyms for the term "false ribs" that are used in different contexts. Some of these synonyms include floating ribs, lower rib cage, subcostal cartilages, flail chest, and interchondral joints. These synonyms are often used interchangeably with false ribs to emphasize different aspects of the anatomy or mechanics of the rib cage. Overall, false ribs, and their synonyms, play an important role in protecting vital organs, maintaining stability, and facilitating respiratory movements in the human body.