no
not atall in any way watsoever
yes
Yes, they are the same thing
there not
plane, plain, plain
there not
The North China Plain is also known as the Great Plain of China. Great China Plain is not a name that is commonly associated with the place.
No
No
The correct usage would be "on the same plane". Plane as in "plate", "table" or "page". These are nouns. "Plain" is an adjective.
yes jack London is the same person as john London. he adopted the name jack.
The same as you do in English: Jack.
there not