Electricity is the term we apply to the flow of electrons. The moving electrons are what we call electric current flow, or just current flow.
If there are two alternate paths for current to flow, that's called a parallel circuit.
In electricity, a current (not "current flow") is a flow of charged particles. There is no such thing as "current flow". The current just "is" - the charges "flow".
Flow of charge is called current. It is coulombs per second, and we call it amperes.
A current is a flow of electrons.
Current is electrical charge flow, in coulombs per second. We simplify coulombs per second and call it amperes.
There is no difference. The flow of electrons is current.
No, charge is not the opposition to the flow of current. Resistance is opposition to the flow of current.