Giving head
Th ball turns and goes to one side !
A "header".
soccer ball, just did it
It isn't called soccer ball because the soccer ball is the ball you use in soccer. See? I have actually heard people call it soccer and soccer ball.
A clearance
tackle
It's called passing or pass
usually it is called a trap or trapping the ball
goal to the last person it touched and assist to the person who threw it
Obstruction
A soccer ball is a sphere.
Yes, as long as the player is not considered tackled a defensive player may strip the ball from the ball carrier.