廃棄
はいき · haiki · JLPT N1 · noun
disposal
🗑️ 廃 (scrap, abolish) + 棄 (throw away) = 廃棄: scrap it and throw it away
Both characters carry the idea of getting rid of something. 廃 means to scrap or abolish, and 棄 means to throw away or abandon. Together they mean disposal.