Appendage and Addendum

Appendage noun - Something that is not necessary in itself but adds to the convenience or performance of the main piece of equipment.

Addendum is a synonym for appendage in attachment topic. In some cases you can use "Addendum" instead a noun "Appendage", when it comes to topics like addition, accessory, limb. popular alternative

Nearby Words: append, appended, appending

Addendum noun - A part added at the end of a book or periodical.

Appendage is a synonym for addendum in addition topic. You can use "Appendage" instead a noun "Addendum", if it concerns topics such as adjunct, accessory, added. popular alternative