Nouns: a rise, an increase, a surge, a growth, a peak, a fluctuation, a variation, a period of stability, a plateau, a fall, a decrease, a decline, a dip
Verbs: to rise, to increase, to surge, to grow, to peak, to skyrocket, to fluctuate, to vary, to fall, to decrease, to decline, to dip, to dive, to plunge
Phrases:to show an upward trend, to show a downward trend, to hit the highest point, to hit the lowest point, to reach a peak, to show some fluctuation, to fluctuate wildly, to remain stable, to remain static, to remain unchanged, to stay constant, to reach a plateau, to level off, to flatten out, the highest, the lowest, the second highest, the third highest, compared to , compared with, relative to
