n. 25B6; verb
the President was overthrown : REMOVE (FROM OFFICE/POWER), bring down, topple, depose, oust, displace, unseat.
an attempt to overthrow Soviet rule : PUT AN END TO, defeat, conquer.
25B6; noun
the overthrow of the Shah : REMOVAL (FROM OFFICE/POWER), downfall, fall, toppling, deposition, ousting, displacement, supplanting, unseating.
the overthrow of capitalism : ENDING, defeat, displacement, fall, collapse, downfall, demise.