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H2O vs hard water

hard water vs H2O

H2O and hard water both are nouns.

Word NounAdjectiveVerbAdverb
H2O Yes No No No
hard water Yes No No No
As nouns, hard water is a hyponym of H2O; that is, hard water is a word with a more specific, narrower meaning than H2O:
  • H2O: binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent
  • hard water: water that contains mineral salts (as calcium and magnesium ions) that limit the formation of lather with soap
H2O (noun) hard water (noun)
binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent water that contains mineral salts (as calcium and magnesium ions) that limit the formation of lather with soap
Difference between H2O and hard water

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