I know everyone is here for the same thing, and we've all been correcting this image since it showed up five years ago, but an Americano is not a black coffee.
It is however, coffee that is black, but if I ordered one and got the other, I'd know somethings up.
Also, I really don't know why people drink americano. To me they just taste like cigarettes, but I'm currently drinking chicory so my opinion is moot.
Americano - half coffee half water.
Solo - just coffee.
Cortado - coffee with a "cut" of milk.
Cafe con leche - half coffee half milk.
Leche manchada - milk "dirtied" with a dash of coffee.
For anyone that sees espresso and thinks express, as in something fast, it's actually meant to be pressed, as it's an Italian term. So that's hot water that went through pressed coffee powder.
Source : am french. I love me some Americano, but the default here is the espresso. You can also get a "long espresso" which is basically a diluted espresso, and is still not the same as an Americano (and this is where my coffee knowledge stops, so I'm not sure what the differences are exactly). I also have some Italian family and they would probably disown me if I said that the Americano is the "default" black coffee