WordNet sense 1 (an upward slope or grade (as in a road)):

acclivity, ascent, raise, rise, upgrade

WordNet sense 2 (an event that involves rising to a higher point (as in altitude or temperature or intensity etc.)):

climbing, mounting

WordNet sense 3 (go upward with gradual or continuous progress):

mount, go up, climb up

WordNet sense 4 (go up or advance):

wax