The longer lines that run along the side of the pitch are called Touch Lines.
soccer and tennis
The boundary lines at the ends of the field are "goal lines" or "end lines". The long boundary lines at the sides of the field are "touch lines" or "side lines". In FIFA Laws of the Game, Law 1 describes the field of play in more detail.
There are a number of lines on a soccer field. None of them are called boundary lines. The touch lines run up and down the length. They form the sides. The goal lines are across the ends of the field. The touch lines and goal lines define the field's perimeter or its boundary. And a ball that is in play must wholely cross one of these lines (either on the ground or in the air) to be considered out of play.
Touch lines (end lines) and side lines are a very big part of soccer. Touch lines and side lines give an area for play or else the game would be a crazy mess! There would be people all over the place if there were no boundaries.
a throw in, in soccer is awarded when the ball is out of bounds but only on the side lines
If you do a throw in, it is because the soccer ball has gone out side of the boundary lines. When you throw the ball in it should give your team an advantage if you do get the ball from the throw in. If the other team wins the thrown you may have to fight to get the ball back what will take some time. the hole over all point is to get the ball closer to the goal you are trying to score on.
Out of Bounds. Boundary Lines, Borders.
Your house has a boundary on all sides.
There are several Lego lines that are fitted for Soccer figurines. Lego toys such as Stephanie's Soccer Practice, is made for people to use their soccer figurines on.
Surveyors (sometimes called Engineering Surveyors) lay out boundary lines between parcels of land, and draw maps.
A plate boundary is like the boundary of a soccer or football field. The edge of a lithospheric plate where it meets another lithospheric plate.