Circle

A person sitting and raising her hand in a circular icon.

Icon of Person Raising Hand

A refresh icon represented by a circular line ending in an arrow.

A half body back-facing character with short hair and a lifted hand, as if they're waving, in a circular icon.

A circular icon containing a telephone symbol. 

A background blob in a non symmetrical curved oval shape.

A single circular tablet with a line down the center. 

Some split concentric circles or an orbit.

A busy and overworked manager or employee surrounded by charts, graphs, and notifications.