pasigraphy: an artificial international language using characters (as mathematical symbols) instead of words to express ideas
entity: that which is perceived or known or inferred to have its own distinct existence (living or nonliving)
kickstand: a swiveling metal rod attached to a bicycle or motorcycle or other two-wheeled vehicle; the rod lies horizontally when not in use but can be kicked into a vertical position as a support to hold the vehicle upright when it is not being ridden