【❓】

#placeholder symbol #unknown value #container symbol #grouping symbol #lenticular brackets #question mark holder

()🤔

#round bracket #grouping symbol #math bracket #expression bracket #order of operations

➰📦➰

#curly shape #squiggly #ecarb #grouping symbol

{➖}

#delimiter #bracket separator #code divider #grouping symbol #mathematical divider

🌳{🌿+🍄}

#biological grouping #set notation #life forms #kingdom classification #biological set #grouping symbol