common-mode
common-reflection-point
common-source
common-timing
common-use
communicate
communication
communication-quality
communicative
communicator
  community
commutate
commutating
commutating-pole
commutation
commutative
commutator
commutatorless
commutator-type
commute
commuter

    community noise

     бытовой шум

     шумовой фон в жилых кварталах