Ключевые слова: abut, adjacent, analogy, axis, balance, balance concept, beam, black, boulder, clog, cobble, compare, comparison, concept, concept design, conceptual, contiguous, counterbalance, dark, design ideas, differ, equilibrium, equivalence, evenness, flat, gravity, harmony, heaviness, idea, joint, light, nature, notion, object, parallel, parity, pebble, rock, scale, shadow, simile, similitude, simplicity, space, stability, stone, symbol, symmetric, thought, weight,