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Addon vs Addendum - What's the difference?

addon | addendum |

As nouns the difference between addon and addendum

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

addon

English

Alternative forms

* add-on

Noun

(wikipedia addon) (en noun)
  • something to expand something else

    • Anagrams

    *

    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.