overthrow vs override

overthrow and override both are nouns.

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

As verbs, overthrow and override are synonyms defined as:

Other synonyms of overthrow include overrule, overturn, reverse.

overthrow (noun)	override (noun)
the termination of a ruler or institution (especially by force)	the act of nullifying; making null and void; counteracting or overriding the effect or force of something
the act of disturbing the mind or body	a manually operated device to correct the operation of an automatic device

overthrow (verb)	override (verb)
rule against	rule against
cause the downfall of; of rulers	ride (a horse) too hard
	counteract the normal operation of (an automatic gear shift in a vehicle)
	prevail over