contradiction; inconsistency
self-contradiction; paradox; antinomy
law of contradiction (logic)
self-contradiction; self-inconsistency
logical inconsistency; logical contradiction
consistency (of an axiomatic system)
contradiction; inconsistency
contradictio in adjecto; contradiction between an adjective and the noun it modifies (wooden iron, hot ice, etc.)
principle of contradiction (logic)
Golden Shield Project; Chinese network-security project which operates the Great Firewall of China