a head ball???
It is hitting the ball with the head and trying to aim towards goal to score.
It is called heading the ball or called a header.
It is quite possible, and even quite legal to take a throw in and have a team mate head the ball into the goal for a score. It's done all the time on a corner kick. The move is called headding the ball. It's quite legal.
Giving head
When you touch the ball with your head and it goes away it is called heading. you can head a ball into the net.
A "header".
Strike the ball at an angle (don't shoot it facing straight in front of the goal), and hit it which the inside part of your foot near your toes (but NOT on your toes). In addition, Strike the lower part of the side of the ball thats farther away from you and follow through with a curved arc toward the part of the goal you want to shoot at. You should keep your head down and finesse it - don't go for huge power.
A player may play the ball with any part of the body except the hands or arms.
At any point where kicking is not suitable or possible for situation eg. Ball in air, defending a high lofted ball, shooting from a high cross, performing a diving header if ball too far ahead of player to stretch a leg to.
If you mean simply redirecting the ball with your head that is called a header.
This is called a Lob
with your back to the goal wait for the ball to come just in front of you at just above head height then press shoot