They have the exact relationship
Answer:
Foreshocks
"Foreshock" and "aftershock" are relative terms. Foreshocks are earthquakes that precede larger earthquakes in the same location. An earthquake cannot be identified as a foreshock until after a larger earthquake in the same area occurs.
(Sorry if I am wrong.)
A.
B.
I hope this helps! Have a lovely day! ~Pooch ♥