Imagery of Boundaries

There's a notable difference between a wall and a boundary. If I had to imagine, a wall alienates. Whereas I imagine a boundary as a pretty picket fence that separates my lush yard and peaceful abode from whatever that's out there, whatever that does not naturally belong or contribute to my peace and safety 💜

Question for you: How do you describe your personal boundaries? What is your take on the difference between walls and boundaries?