noun
accessory; attachment; appendage
Refers to something that is attached to or belongs to a main object, such as accessories, attachments, or appurtenances.
この掃除機にはたくさんの付属物がついている。
This vacuum cleaner comes with many attachments.
契約書の付属物として図面を添
I attached the drawings as an appendix to the contract.
付属品 is more common for accessories or parts that come with a product, while 付属物 can also refer to abstract attachments or appendages.
Compound of 付属 (attachment, belonging) + 物 (thing).