Confusion happens because, on the visible surface, both types of investing often appear to be the same.

FORBES: What's the Difference Between Private Equity and Venture Capital?

One of the great usability benefits of this design is that the iWatch could sense body position and orient the focus of the visible surface towards the user.

FORBES: The iWatch As Snap Bracelet? Apple Just Got The Patent.

Virtually every visible interior surface of this stone temple, save the floor, is devoted to sculpted representations of deities and mythical beings drawn from the gospels of the Jain sects.

WSJ: Enlightenment on an Intimate Scale | The Adinatha Temple at Ranakpur | Masterpiece by James S. Ackerman

After analysing an unusual but temporary increase in Titan's brightness, Dr Griffith concluded that the most likely explanation was the presence of a thick, reflective cloud, covering roughly 9% of the part of Titan's surface then visible from earth.

ECONOMIST: Comparative meteorology

Cosmic rays from a supernova would have scorched the moon, leaving signs of damage in surface minerals that could be visible to microscopes.

FORBES: Ancient Supernova Explosions Left Their Scars on Earth

For those who prefer to stay closer to the surface, Calanggaman Island offers an exquisite coral wall visible to both divers and snorkelers.

BBC: Swimming with sharks in the Philippines

There was no visible wood grain in the print, and its shape indicated it was taken from a curved surface, not a flat one.

BBC: Fingerprint evidence is fallible