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Opacity vs Density - What's the difference?

opacity | density |

As nouns the difference between opacity and density

is that opacity is the state or quality of being opaque, not allowing light to pass through while density is (physics: amount of matter contained by a given volume) A measure of the amount of matter contained by a given volume.

opacity

English

Noun

  • (uncountable) The state or quality of being opaque, not allowing light to pass through
    • We could not see the sandbar due to the opacity of the muddy water.
  • (uncountable) The state or quality of being inaccessible to understanding
    • The opacity of these decisions is troubling.
  • (optics, countable) A measure of relative impenetrability to electromagnetic radiation such as light.
    • The opacity of a clean glass window is near zero.

    Synonyms

    * opaqueness

    Coordinate terms

    * transparency

    density

    English

    (wikipedia density)

    Noun

    (densities)
  • (physics) A measure of the amount of matter contained by a given volume.
  • * {{quote-magazine, year=2013, month=May-June, author=Kevin Heng
    • , title= Why Does Nature Form Exoplanets Easily? , volume=101, issue=3, page=184, magazine=(American Scientist) , passage=In the past two years, NASA’s Kepler Space Telescope has located nearly 3,000 exoplanet candidates ranging from sub-Earth-sized minions to gas giants that dwarf our own Jupiter. Their densities range from that of styrofoam to iron.}}
  • (senseid)The ratio of one quantity to that of another quantity.
  • (senseid)The probability that an event will occur, as a function of some observed variable.

    • Derived terms

    * charge density * energy density * electron density * freight density

    Anagrams

    *