古 紙(こし)

こし

noun

waste paper; used paper; recycled paper

nature daily-life

1. waste paper; used paper; recycled paper

paper that has been used and is collected for recycling; waste paper

古紙(こし)を回収(かいしゅう)する。

To collect waste paper.

古紙(こし)はリサイクルに出(だ)してください。

Please put waste paper out for recycling.

この製品(せいひん)は古紙(こし)100パーセントで作(つく)られている。

This product is made from 100% recycled paper.

A compound of 古(こ) (old, used) and 紙(し) (paper). Common in environmental and recycling contexts. In Japan, waste paper collection is an important part of the detailed garbage separation system.

Common collocations

古紙(こし)回収(かいしゅう): waste paper collection
古紙(こし)リサイクル: paper recycling
古紙(こし)配合率(はいごうりつ): recycled paper content ratio
古紙(こし)100パーセント: 100% recycled paper

Similar words

再生紙(さいせいし): recycled paper — emphasizes that the paper has been reprocessed
廃紙(はいし): waste paper — more formal, emphasizes discarding

Related Words

Compare: 再生紙(さいせいし) (recycled paper)

Related: 紙屑(かみくず) (wastepaper, scrap paper)

Compare: 新聞紙(しんぶんし) (newspaper (as material))

general

Added 2026.4.4 4:21 · Revised 2026.9.4 21:29

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