Pangea.
The official, mathematical word for 2 pyramids attached together is a bipyramid. It is called a bipyramid because -bi means 2, and bi-pyramid means 2 pyramids.
They called themselves Hellenes. As the Romans spread down the Italian peninsula they ran into a tribe called the Graeci. As they went further, they ran into a lot of Hellenic cities, and thinking them the same people, called them the Great Graeci (Greeks). The name has stuck, but the 'reeks' today still think of themselves a Hellenes.
For the most part; gravity and friction. Which is why they're still (mostly) standing.
Neilos/Nile, was the name the Greeks called it; it stuck because the Romans passed it on.
Not a nickname, but what they themselves called it was Hellas, after its legendary founder Helen (a male). They called themselves Hellenes. If you want a nickname, it's Greek - the Romans started calling the Hellenes Greeks when they mistook the Greeks in southern Italy for a tribe called the Graeci, and the name has stuck, but Greeks even today call themselves Hellenes.
pangia
A group of bananas stuck growing together is called a hand.All the bananas growing together off the same stem is called a bunch.
Anything that gets stuck together by pressure is compaction. I.E., Snow.
Rocks can be naturally stuck together by a couple of different things, including volcanos. Stone that consists of "stuck together" rocks is called conglomerate.
It's called adhesions.
Siamese twins
fricton
5-20 min
Because you cannot live in them. For instance, if they were packed tightly together, they would be called apartments. My question is why are they called apartments when they are all stuck together?
Octahedron https://en.wikipedia.org/wiki/Octahedron
Moon conglomerate
When the bones of the ears are essentially stuck together, this is called auditory ossicle fusion or fixation. It is one of the many cause of Conduction Deafness or loss of hearing.