Nelson Goodman offered an "approach to a theory" of them in his Languages of Art.  Other theories of them are discussed in a book by Tzvetan Todorov, while "presentational" and "discursive" ones are considered in Philosophy in a New Key by Susanne Langer.  In a series of four books which includes The Phenomenology of Knowledge and Mythical Thought, Ernst Cassirer proposed a "philosophy" of this kind of form.  In the work of C. S. Peirce, these are distinguished from indices and icons.  FTP, give this term for the repres
Nelson Goodman offered an "approach to a theory" of them in his Languages of Art.  Other theories of them are discussed in a book by Tzvetan Todorov, while "presentational" and "discursive" ones are considered in Philosophy in a New Key by Susanne Langer.  In a series of four books which includes The Phenomenology of Knowledge and Mythical Thought, Ernst Cassirer proposed a "philosophy" of this kind of form.  In the work of C. S. Peirce, these are distinguished from indices and icons.  FTP, give this term for the representation of a concept, which in the work of Herbert Blumer describes a form of interactionism.
Nelson Goodman offered an "approach to a theory" of them in his Languages of Art.  
symbols (accept variants like symbolic)