Gantt chart: A way of visualising project tasks, originally developed for shipbuilding.
Gatekeeper: Media theory that sees journalists as gatekeepers, with the power to decide which news stories are communicated to mass audiences. A less powerful concept since social media removed the monopoly on news formerly held by journalists.
Global Alliance: Umbrella organisation representing national professional associations including the UK’s CIPR.
Greenwashing: A conflation of green and whitewash, this describes misleading claims made by organisations about their environmental (‘green’) impact.