[n] any number of entities (members) considered as a unit
[n] the activity of putting things together in groups
[n] a system for classifying things into groups
ABO blood group system, ABO group, ABO system, accumulation, actinide, actinoid, actinon, activity, aggregation, aggregation, arrangement, assemblage, assembling, association, assortment, biological group, biotic community, categorisation, categorization, circuit, citizenry, classification, classification system, collecting, collection, collection, community, compartmentalisation, compartmentalization, edition, electron shell, ethnic group, ethnos, halogen, hoi polloi, human beings, human race, humanity, humankind, humans, kingdom, lanthanide, lanthanoid, lanthanon, man, mankind, mass, masses, multitude, pairing, people, phrasing, population, punctuation, race, rare earth, rare-earth element, sainthood, series, social group, sorting, straggle, subgroup, system, world
\Group"ing\, n. (Fine Arts) The disposal or relative arrangement of figures or objects, as in, drawing, painting, and sculpture, or in ornamental design.