A section of the skin structure or hair follicle.

Skin Structure With Hair

Swimming Duckling

A single hardcover book laying flat with its spine visible.

A row of many different standing closed books, as if they were on a shelf, seen from the side of their spines.

Three standing different books, seen from the side of their spines.

A single hardcover book with a spine tilting to the side.

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