leninism: the political and economic theories of Lenin which provided the guiding doctrine of the Soviet Union; the modification of Marxism by Lenin stressed that imperialism is the highest form of capitalism (which shifts the struggle from developed to underdeveloped countries)
communism: a political theory favoring collectivism in a classless society
birch: hard close-grained wood of any of various birch trees; used especially in furniture and interior finishes and plywood