Soviet russia has 2 different meanings across 2 categories:
formerly the largest Soviet Socialist Republic in the USSR occupying eastern Europe and northern Asia
The unofficial term used for the former Russian Republic for a short period after its collapse - from 7 November 1917 (October Revolution) to 19 July 1918 (1st RSFSR Constitution) or to 30 December 1922 (Treaty on the Creation of the USSR). Also used to refer to the Soviet Union as a whole in the early stages.