🔳1️⃣

#black white square #contrast symbol #grayscale #number 1

🔳☯️

#square button #black white symbol #contrast symbol

⬛❔

#white question mark #contrast symbol #query block #unknown box #stark query

🔳🪜

#black square button #ladder #staircase #B&W square #contrast symbol

⬛️❕

#white on black #contrast symbol #highlighted alert