to rise, grow, increase, climb, improve, get better	wzrastać
a rise, growth, increase, improvement	wzrost
to fall, decrease, decline, drop, deteriorate, get worse	spadać
a fall, decrese, declina, drop, deterioration	spadek
considerable, dramatic, sharp, significant, substantial	large change
moderate, slight	small change
abrubt, quick, rapid, sudden	fast change
slow	slow change
gradual, steady	regular change
to peak, top out, reach a peak, reach a maximum	osiągnąć szczyt i spaść
to hit bottom, to bottom out, to reach a low point	spaść na dno i wzrastać
to remain stable, to stabilize, to remain constant, to level off	utrzymywać się na tym samym poziomie
to fluctuate	falować