A linguistic symbol is a unit of language that represents a concept, object, or idea. It consists of two main components: the "signifier," which is the form of the word or expression, and the "signified," which is the meaning associated with it. For example, the word tree is a linguistic symbol where the letters form the signifier, and the actual concept of a tree is the signified. Linguistic symbols are essential for communication, as they allow individuals to convey thoughts and feelings. They can be found in spoken, written, and signed languages, making them fundamental to human interaction. Understanding these symbols helps in learning languages and interpreting messages effectively.