prevail vs override

prevail is not a noun while override is a noun.

Word	Noun	Adjective	Verb	Adverb
prevail	No	No	Yes	No
override	Yes	No	Yes	No

As verbs, override is a hyponym of prevail; that is, override is a word with a more specific, narrower meaning than prevail:

Other hyponyms of prevail include overarch, outbalance, outweigh, overbalance, preponderate.

prevail (noun)	override (noun)
	the act of nullifying; making null and void; counteracting or overriding the effect or force of something
	a manually operated device to correct the operation of an automatic device

prevail (verb)	override (verb)
use persuasion successfully	rule against
prove superior	ride (a horse) too hard
continue to exist	counteract the normal operation of (an automatic gear shift in a vehicle)
be valid, applicable, or true	prevail over
be larger in number, quantity, power, status or importance