□+⚪️

#square symbol #outline square #geometric pair #square shape #white dot

⏹️⚫

#stop button #medium black circle #square button #circle symbol #ui elements #geometric pair

🟠⬜

#orange color #square shape #orange and white #color and shape #geometric pair #circle square

🌙🔽

#downward triangle #inverted triangle #earth symbol association #water symbol association #geometric pair

⭕️/🔳

#shape contrast #hollow circle #square button #round vs square #geometric pair #outlined shapes

⬛️　⚫️

#black square black circle #square and circle #geometric pair #shape combo #block symbol circle symbol