different between lightlike vs timelike

English

light +? -like

lightlike (comparative more lightlike, superlative most lightlike)

(mathematics) (of a four-vector) Having a space component whose magnitude is equal to its time component multiplied by the speed of light.

time +? -like

timelike (comparative more timelike, superlative most timelike)

(mathematics, physics) Of a four-vector in representing a point in spacetime, having a positive or negative four-vector norm for the metric signature (+, -, -, -) and (-, +, +, +) respectively.
(physics) (of the interval between two events in spacetime) Having overlapping light cones, so that information can pass from one to the other, and one can be envisaged as a cause of the other.

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