noun
finished product; final product
Refers to a completed item, often in manufacturing, project deliverables, or creative works.
完成物の品質を確認してください。
Please check the quality of the finished product.
この完成物は来月納品予定です。
This final product is scheduled for delivery next month.
成果物 refers to deliverables or outcomes of work, often used in project contexts, whereas 完成物 focuses on the finished item itself.
Compound of 完成 (completion) and 物 (thing).