Signs are marks and trademarks that show the characteristics of things. Logo refers to the position indicated by the vertical mark.
Signs and signs have similar meanings, but there are also differences: signs refer to making marks, which can be words, graphics or other forms, such as signs in public places.
Symbols are universal and are generally represented by simple symbols. For example: arrows indicating the direction, digital marks used to distinguish similar items, etc. For example, to make a judgment question, we usually put a tick and a cross. Tick marks and cross marks are the marks we make for right or wrong questions, indicating whether the questions are right or wrong.