What is the difference between feedforward inhibition and feedback inhibition?

What is the difference between feedforward inhibition and feedback inhibition?

feed forward fast one…
increase saliva on seeing food :shallow_pan_of_food:
heart rate increase even before exercise starting

feedback- slower one…
positive or negative feed back

if temp decrease then brain sense it and then it will increase temp.

if uterus stretch by babys growth
—>signal releases oxytocinand it further stimulates uterus contraction