acclivity vs ascent

acclivity and ascent both are nouns.

Word	Noun	Adjective	Verb	Adverb
acclivity	Yes	No	No	No
ascent	Yes	No	No	No

As nouns, acclivity and ascent are synonyms defined as:

Other synonyms of acclivity include climb, raise, rise, upgrade.

acclivity (noun)	ascent (noun)
an upward slope or grade (as in a road)	the act of changing location in an upward direction
	a movement upward; rise above the ground
	an upward slope or grade (as in a road)