Appendage and Addition

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

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

Nearby Words: append, appended, appending

Addition noun - A smaller structure added to a main building.

Appendage is a synonym for addition in adjunct topic. You can use "Appendage" instead a noun "Addition", if it concerns topics such as accessory, supplement, assistant, extra. popular alternative

Nearby Words: additional, adding, additive, additionally