As a child, you might admire your older cousin's worldliness as she travels across Asia. The adjective worldly comes from the Old English woruldlic, which combines woruld, "human affairs or the world" and gelic, "like or similar."

What is this worldliness?

: interest in, concern with, or devotion to things of this world especially as opposed to a future stage of existence (as after death)

Is Antarctica an adjective?

antarctic (adjective) Antarctic (proper noun) ... Antarctica (proper noun)