Proverbs 14:15-16 is both a chiasm and a parallelism contrasting the fool with the wise, foolish behavior with wise behavior.

..V15 - The gullible believe everything
......The prudent watch their step
......V16 - The wise are cautious and avoid evil
..The fool carelessly trespasses

..V15 - The gullible believe everything
......The prudent watch their step
..V16 - The wise are cautious and avoid evil
......The fool carelessly trespasses