different between lightlike vs spacelike

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.

From space +? -like. Compare spacely.

spacelike (not comparable)

having the properties of space
(physics, of the interval between two events in spacetime) lying outside each other's light cone, so that no information can pass from one to the other
(mathematics, of a four-vector) having a space component of greater magnitude than its time component multiplied by the speed of light