The term "horizontal bar" refers to a sturdy pole or bar that is positioned parallel to the ground. It is typically used in gymnastics, where athletes use it to perform various movements and exercises. However, there are several other synonyms for the term, including high bar, parallel bar, and uneven bar. The high bar is similar to the horizontal bar but is higher off the ground and typically used in men's gymnastics. The parallel bar is also a gymnastics apparatus, but it consists of two bars set parallel to each other. The uneven bar is used in women's gymnastics and has bars set at different heights. Regardless of the name, each of these bars requires immense strength, skill, and determination to master.