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Addendum vs Additional - What's the difference?

addendum | additional |

As nouns the difference between addendum and additional

is that addendum is something to be added; especially text added as an appendix or supplement to a document while additional is something added.

As an adjective additional is

supplemental or added to something.

addendum

English

Noun

(wikipedia addendum) (en-noun)
  • Something to be added; especially text added as an appendix or supplement to a document.
  • A postscript.
  • (engineering) The height by which the tooth of a gear projects beyond (outside for external, or inside for internal) the standard pitch circle or pitch line.

    • additional

    English

    Adjective

    (-)
  • Supplemental or added to something.
  • * {{quote-magazine, year=2013, month=September-October, author= Michael Sivak
    • , magazine=(American Scientist), title= Will AC Put a Chill on the Global Energy Supply? , passage=Nevertheless, it is clear that the global energy demand for air-conditioning will grow substantially as nations become more affluent,

    Noun

    (en noun)
  • Something added.
    • (Francis Bacon)