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Addendum vs Supplemental - What's the difference?

addendum | supplemental |

As nouns the difference between addendum and supplemental

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

As an adjective supplemental is

acting to supplement.

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.

    • supplemental

    English

    Adjective

    (en adjective)
  • Acting to supplement.
  • *
    • The supplementary bibliography (in Vol. VI) attests to the comprehensiveness of the effort.
  • Appending.
  • Lacking a regular schedule (as in a supplemental airline).

    • Derived terms

    * supplementally

    Noun

    (en noun)
  • Something that supplements or adds to.
  • A requisition or article of legislation that provides additional funding for a program.