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• the social act of assembling

  synonym	assemblagegathering
  antonym	disassembly
  hypernym	group action
  hyponym	calling togethercoming togetherconcentrationcongregatingcongregationcongressconveningconventionconvocationfairgroup meetingmass meetingmeetingmeetingmobilisationmobilizationrallywine tasting

• the act of constructing something (as a piece of machinery)

  synonym	fabrication
  antonym	disassembly
  hypernym	buildingconstruction

• a group of machine parts that fit together to form a self-contained unit

  hypernym	machine
  hyponym	sub-assemblyweldment

• a public facility to meet for open discussion

  synonym	forummeeting place
  hypernym	facilityinstallation

• a unit consisting of components that have been fitted together

  hypernym

  unitwhole

• a group of persons who are gathered together for a common purpose

  hypernym	assemblagegathering
  hyponym	AreopagusBenchchamberchaptercouncilcourtcovendeliberative assemblygeneral assemblyjudicaturelaw-makerslegislative assemblylegislative bodylegislaturesabbatStates Generaltribunalwitches' Sabbath