Definition of Colplanar Lines
A set of lines that lie on the same plane are said to be Coplanar.
Definition of Concurrent Lines
Concurrent lines are three or more lines that pass through the same point.
Definition of Space
Space is made up of all possible planes, lines, and points. It extends indefinitely in all directions.
Coplanar Lines
Coplanar lines are lines that lie on the same plane.
Example: The points A and F are coplanar but the points A and B are not
Example
The red and green lines are coplanar because they both lie on the grey plane. The blue line is not coplanar to the green and red lines because it does not lie on the same plane. 
Example
These lines are concurrent because the all pass through the point p.
