Today I found a scrap of paper containing three definitions I made up. The paper is dated November 13, 1999, long enough that I had forgotten it. I found it interesting; perhaps you will as well:
A pun is a way to go from one logical chain to another logical chain without establishing a logical connector. It is a pseudo-logical connector.
A symbol is a knot, connecting different threads, different lines of logic, which can shed light on one another.
An attitude is an emotional frame of reference.