This is a white small square, it also has three magnification forms:
◽️ white small medium square,
◻️ white medium square and
⬜️ white large square . On the Internet, people use it as a white color card, or as a decorative symbol for text content. When it appears with
▪️ black squares, we think of mosaics. Related emojis：
⚫️ black circles,
⚪️ white circles.