different between greywater vs blackwater

greywater

English

Alternative forms

  • graywater, grey water, gray water

Etymology

grey +? water

Noun

greywater (plural greywaters)

  1. Alternative spelling of gray water

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blackwater

English

Alternative forms

  • black water

Etymology

From black +? water.

Noun

blackwater (usually uncountable, plural blackwaters)

  1. Water containing loam, tannins, etc., giving it a very dark appearance. [from 15th c.]
  2. Blackwater fever; malaria caused by Plasmodium falciparum. [from 19th c.]
    • 1954, Doris Lessing, A Proper Marriage, HarperPerennial 1995, p. 155:
      She began talking of the way they had died – blackwater, malaria, a neglected appendix.
  3. Waste from domestic toilets; water containing fecal matter. [from 20th c.]

Synonyms

  • (waste water likely to contain fecal matter): brown water, foul water, sewage

Coordinate terms

  • graywater
  • greywater
  • sullage
  • washwater

Translations

See also

  • blackwater rafting

blackwater From the web:

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  • what's blackwater fever
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