is there any difference between static cast to rvalue reference and std::move

The description for static cast says

If new_type is an rvalue reference type, static_cast converts the value of expression to xvalue. This type of static_cast is used to implement move semantics in std::move.(since C++11)

Does this confirm that the following are equivalent ?

(A)

X x1; X x2 = static_cast<X&&>(x1);

(B)

X x1; X x2 = std::move(x1);

What is the difference between lvalue and rvalue references?

“l-value” refers to a memory location that identifies an object. “r-value” refers to the data value that is stored at some address in memory. References in C++ are nothing but the alternative to the already existing variable.

Can Lvalue bind to rvalue reference?

An lvalue reference can bind to an lvalue, but not to an rvalue.

Yes there is a very important difference: std::move documents what you want to do. In addition the cast is prone to writing errors like a forgotten & or wrong type X.

As it can be seen, std::move is even less to type.