1️⃣⬛

#one square #single block #geometric box #grid square #basic box shape #1 box

1️⃣❌1️⃣⏹️

#1x1 tile #1 by 1 square #single unit #grid square #basic unit

7️⃣▦

#seven quadrat #grid square #plot sampling #quadrat grid #sampling unit #divided area #seven cell