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Noun group has 3 senses
  1. group, grouping - any number of entities (members) considered as a unit
    --1 has particulars:
     arrangement; straggle; kingdom; biological group; community, biotic community; world, human race, humanity, humankind, human beings, humans, mankind, man; people; social group; collection, aggregation, accumulation, assemblage; edition; electron shell; ethnic group, ethnos; race; association; subgroup; sainthood; citizenry, people; population; multitude, masses, mass, hoi polloi, people; varna; circuit; system, scheme; series; actinoid, actinide, actinon; rare earth, rare-earth element, lanthanoid, lanthanide, lanthanon; halogen
    Derived forms: verb group2, verb group1
  2. group, radical, chemical group - (chemistry) two or more atoms bound together as a single unit and forming part of a molecule
    --2 is a kind of unit, building block
    --2 is a part of molecule
    --2 has particulars:
     acyl, acyl group; alcohol group, alcohol radical; aldehyde group, aldehyde radical; alkyl, alkyl group, alkyl radical; allyl, allyl group, allyl radical; amino, amino group; azido group, azido radical; azo group, azo radical; benzyl, benzyl group, benzyl radical; benzoyl group, benzoyl radical; cacodyl, cacodyl group, cacodyl radical, arsenic group; carbonyl group; carboxyl, carboxyl group; chromophore; cyano group, cyano radical, cyanide group, cyanide radical; glyceryl; hydrazo group, hydrazo radical; hydroxyl, hydroxyl group, hydroxyl radical; ketone group; methylene group, methylene radical, methylene; propyl, propyl group, propyl radical; butyl; nitro group; nitrite; uranyl, uranyl group, uranyl radical; vinyl, vinyl group, vinyl radical
  3. group, mathematical group - a set that is closed, associative, has an identity element and every element has an inverse
    --3 is a kind of set
    --3 has particulars: subgroup; Abelian group, commutative group
,Verb group has 2 senses
  1. group - arrange into a group or groups; "Can you group these shapes together?"
    --1 is one way to     classify, class, sort, assort, sort out, separate
    Derived forms: noun group1, noun grouping2
    Sample sentences:
    Somebody ----s something
    Somebody ----s somebody
  2. group, aggroup - form a group or group together
    --2 is one way to meet, gather, assemble, forgather, foregather
    Derived forms: noun group1, noun grouping2
    Sample sentence:
    The crowds group in the streets
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