Single click, also known as a left click, is a common term used to describe a simple action of pressing the left button on a mouse once. However, there are other variations of this term, such as "one mouse click," or "one tap" on a touch screen device. In addition, some software or applications may use their own synonyms like "select" or "activate." Furthermore, depending on the context, single click can also be referred to as "quick click," "light touch," or "single press." Overall, regardless of the term used, the action remains the same, and it is commonly used in various technological devices and applications.