Add-on and Surcharge

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

Surcharge and add-on are semantically related. In some cases you can use "Surcharge" instead a noun phrase "Add-on".

Surcharge noun - An additional charge (as for items previously omitted or as a penalty for failure to exercise common caution or common skill).

Add-on and surcharge are semantically related. Sometimes you can use "Add-on" instead a noun "Surcharge".

Nearby Words: surcharged, surcharging