Cog

• Rear sprocket of a bicycle • Cog (ship), a type of sailboat from the 10th century onward • Center of gravity, a spatial point related to an object's center of mass • Cluster of Orthologous Groups of proteins; see Sequence homology and MicrobesOnline • Conserved oligomeric Golgi complex, that includes COG2, COG4, etc. • INSEE code (also code officiel géographique), a numerical indexing code used by the French National Institute for Statistics and Economic Studies • Mount Washington Cog Railway, the world's first mountain-climbing cog railway • OpenCog, a project that aims to build an open source artificial general intelligence framework • Chip on Glass; see Liquid-crystal display ==Entertainment and media==

• C.O.G., a 2013 American drama • "The Changing of the Guard" (The Twilight Zone), a 1962 episode of the TV series The Twilight Zone • "Cog" (advertisement), a British television and cinema advertisement launched by Honda • Star Wars Jedi Quest 8: The Changing of the Guard, the eighth book in the Star Wars Jedi Quest series by Jude Watson • COG, a 2020 novel by Greg van Eekhout Fictional characters • Coalition of Ordered Governments, a fictional organization from the Gears of War series • Cogs, the fictional antagonists in the MMORPG Toontown Online • Cogs, the fictional foot soldiers of Power Rangers Machine Empire • Cog (comics), a character from the Spawn comics Music • Cog (band), an Australian progressive rock band • "Changing of the Guards", a single from Bob Dylan's 1978 album Street-Legal • The Changing of the Guard (album), 2010 album by indie rock band Starflyer 59 • "Change of the Guard", a song from Steely Dan's 1972 album ''Can't Buy a Thrill'' • "Changing of the Guard", a song from Exodus' 1990 album Impact Is Imminent ==Organizations==

• Canberra Ornithologists Group, an Australian ornithological organization • Children's Oncology Group, a National Cancer Institute supported clinical trials group • Church of God (disambiguation), a name used by numerous, mostly unrelated Christian denominational bodies • Council of governments, regional bodies that exist throughout the United States • Covenant of the Goddess, a cross-traditional Wiccan group • The ISO 3166-1 alpha-3 country code for Republic of the Congo ==Other uses==

• Cog (software), an open source audio player for macOS • Cog (project), a project at the Humanoid Robotics Group of the Massachusetts Institute of Technology • Continuity of government, defined procedures that allow a government to continue its essential operations in case of catastrophe • Changing of the Guard (or Guard Mounting), a formal ceremony in which sentries are relieved by their replacements • Course over ground, the actual path followed by a vessel from A to B as determined by its course ==See also==