Open English Wordnet
Nouns
(n)Russian Revolution, October Revolutionthe coup d'etat by the Bolsheviks under Lenin in November 1917 that led to a period of civil war which ended in victory for the Bolsheviks in 1922
(n)Russian Revolution, February Revolutionthe revolution against the czarist government which led to the abdication of Nicholas II and the creation of a provisional government in March 1917