#appreciation.savvy__grasp__hold  understanding of the nature or meaning or quality or magnitude of something; "he has a good grasp of accounting practices"
  supertype:  savvy__understanding__apprehension__discernment  the cognitive condition of someone who understands; "he has virtually no understanding of social cause and effect"
  subtype:  sense.appreciation  a natural appreciation or ability; "a keen musical sense"; "a good sense of timing"

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