Accessory and Additions

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

Additions and accessory are semantically related In some cases you can replace term "Additions" with "Accessory", this nouns are similar.

Nearby Words: accession, accessary, accessorize, accessorial, accessorise

Accessory and additions are semantically related in enlargement of something topic. Sometimes you can use "Accessory" instead a noun "Additions".