The Ctrl key, also known as the Control key, is an essential part of computer keyboard shortcuts. It is used in conjunction with other keys to execute certain functions. However, there are many synonyms for the Ctrl key, such as the Control key, Compose key, or the Meta key. Moreover, depending on the keyboard type, the Ctrl key could be labeled differently, including CTL, Ctl, Control, or Cntrl. It is important to note that regardless of the label, the function remains the same. So, whether you use the Ctrl, Control, or Compose key, it is a vital key to enable efficient navigation and commands on your computer.