Difference between "intercept" and "intersect" What is the difference between intercept and intersect? Can they be used interchangeably? For example, intersecting lines and intercepting lines.
There is a temporal element to intercept which is absent from intersect: if two paths are generated respectively by two particles moving through space, the paths may intersect; however, one particle only intercepts the other if they arrive at the point of intersection simultaneously.
Technically intersection is  defined as, it is a meeting point of two variabled curve which varied  as  time ie, the  equations of curves will vary.
        But in case of intercept, one  curve  equation is  constant  and  other is  varied  as its bounded  area.