overthrow

nouns

the termination of a ruler or institution (especially by force)
overthrow
is a type of (narrower)
the act of ending something
"the termination of the agreement"
conclusion, ending, termination
the act of disturbing the mind or body
"his carelessness could have caused an ecological upset"; "she was unprepared for this sudden overthrow of their normal way of living"
derangement, overthrow, upset

verbs

cause the downfall of; of rulers
"The Czar was overthrown"; "subvert the ruling class"
bring down, overthrow, overturn, subvert
rule against
"The Republicans were overruled when the House voted on the bill"
override, overrule, overthrow, overturn, reverse