Table 5.11 — ECs with labels beginning with G
Label Concept definition Figure(s) Code
GALAXY Any of numerous vast systems of <STAR>s, gas, and interstellar dust that exists separately in the universe and together contain nearly all of its visible matter; a galaxy [SOED, "galaxy", 1b].   468
GANTRY A frame <STRUCTURE> raised on side supports to span over or around something; a gantry.   469
GASTROPOD A <MOLLUSC> of the class Gastropoda, the members of which typically have a flattened ventral foot for locomotion and a univalve shell; a gastropod.
EXAMPLES     Snail, slug, whelk, limpet.
  470
GATE A <BARRIER> that controls passage on a <LAND_TRANSPORTATION_ROUTE>; a gate.   471
GEODETIC_DATUM A datum (see ISO 19111, 4.9) describing the relationship of a coordinate system (see ISO 19111, 4.7) to the <EARTH>; geodetic datum.   472
GEOGRAPHIC_BASIN The <TERRAIN_SURFACE_REGION> that is drained by a <RIVER> and its tributaries or that drains into a particular <LAKE> or <SEA>; a geographic basin.   473
GEOGRAPHIC_INFORMATION A <LOCATION> or <REGION> where geographic information or statistics may apply.   474
GEOLOGIC_FAULT A fracture in the <TERRAIN> with displacement on one side of the fracture relative to the other; a geologic fault.   475
GEOPHYSICAL_SURVEY_PATH A path marked on the <TERRAIN> resulting from geophysical survey operations.   476
GEOPHYSICAL_SURVEY_POINT A survey <LOCATION> established for the collection of geophysical data; a geophysical survey point.   477
GEOTHERMAL_OBJECT A localized <TERRAIN_SURFACE_OBJECT> that is controlled by or derived from the heat of the interior of a <PLANET>; geothermal object.
EXAMPLE     Hot <SPRING>.
  478
GLACIER A large mass of land-based <SNOW_GROUND_COVER> and <ICE> moving slowly down a slope or <VALLEY_REGION> from above the snowline; a glacier.   479
GLADE A <TRACT> with few or no <TREE>s that is surrounded by a <TREED_TRACT>; glade.   480
GOLF_COURSE A <TRACT> laid out for playing the game of golf; a golf course.   481
GOLF_DRIVING_RANGE A <TRACT> used for practicing golf shots; a golf driving range.   482
GORGE A deep, narrow <TERRAIN_CHANNEL> with steep rocky sides; a gorge [AHD, "gorge", 1].   483
GOVERNMENT_BUILDING A <BUILDING> devoted to the act or process of administration of public policy in a political unit; a government building.   484
GOVERNMENT_FACILITY A <FACILITY> including one or more <GOVERNMENT_BUILDING>s; a government facility.   485
GRADATION_WORKS A <STRUCTURE> over which brine trickles and is concentrated through increased evaporation; a gradation works.   486
GRAIN_ELEVATOR A tall <STRUCTURE> equipped for loading, unloading, processing, and/or storing grain; a grain elevator.   487
GRAIN_STORAGE_STRUCTURE An enclosed <CONTAINER> used for storing grain or fodder; grain storage structure.   488
GRANDSTAND A <STRUCTURE> for special viewing of outdoor events that has tiers of seats or standing room for spectators; a grandstand.   489
GRASS Any <PLANT> of the large cosmopolitan family Gramineae (including cereals, reeds, and bamboos besides the characteristic <PLANT>s of pasture-land), members of which typically have erect jointed stems (culms) bearing narrow bladelike leaves and insignificant flowers, or any of various <PLANT>s resembling the members of Gramineae in appearance; grass [SOED, "grass", 4.b].   490
GRASS_LAND A <TRACT> covered by <GRASS> that has little or no woody tissue; a grassland.   491
GRAVE_MARKER A <MARKER>, often located at a <CEMETERY>, indicating an individual gravesite; a grave marker.   492
GREEN_SPACE A maintained <TRACT> that is covered by <VEGETATION>, which may also contain pathways, intended to improve the appearance of a <BUILT_UP_REGION> but not to be a <PARK>; a green space.   493
GREENHOUSE A <BUILDING>, which is often constructed primarily of transparent <MATERIAL> (for example: glass or plastic), in which <<AIR_TEMPERATURE>> and <<RELATIVE_HUMIDITY>> can be controlled for the cultivation and/or protection of <PLANT>s; a greenhouse [SOED, "greenhouse", a].   494
GROIN A <STRUCTURE> that normally projects outward from a <SHORE> and protects a <BEACH> from erosion by disrupting the alongshore movement of <SAND> and other <SEDIMENT>s but not by preventing <WATER_WAVE>s from reaching the <SHORE>; a groin.   495
GROUND_SURFACE_ELEMENT A <PROPERTY_SET> describing one or more characteristics of the <SURFACE> of the <SOIL> of a <TRACT>; a ground surface element.   496
GROUND_VEHICLE A <VEHICLE> operating principally on <LAND>; a ground vehicle.   497
GROUNDS A large enclosed <TRACT> surrounding or attached to a <BUILDING>, most commonly a <HOUSE>; grounds [SOED, "ground", 13].   498
GUARD_TOWER An elevated enclosed <BUILDING> including one or more <GUARDROOM>s; a guard tower.   499
GUARDHOUSE A small enclosed <BUILDING> accommodating a guard or serving as a <DETENTION_FACILITY>; a guardhouse [SOED, "guardhouse"].   500
GUARDROOM A small enclosed <ROOM> accommodating a guard or serving as a <DETENTION_FACILITY>; a guardroom [SOED, "guardroom"].   501
GUIDED_MISSILE_CRUISER A <CRUISER> equipped with guided <MISSILE>s.   502
GUIDED_MISSILE_DESTROYER A <DESTROYER> equipped with guided <MISSILE>s.   503
GUIDED_MISSILE_FRIGATE A <FRIGATE> equipped with guided <MISSILE>s.   504
GULLY A long, narrow, deep <TERRAIN_CHANNEL> that is caused by erosion and has steep banks; a gully.   505