How to say "compost" in Japanese

• 堆肥たいひCommon
  nounCompost as a material: decayed organic matter dug into soil to enrich it. It equally means manure, so it is at home in farming and gardening talk.
• コンポストCommon
  nounThe loanword, borrowed directly from English 'compost'. It covers the compost sense rather than manure, and works wherever you would naturally say 'compost' in English.
• 肥料ひりょうJLPT N1approx.Common
  nounThe general word for fertilizer (manure included). Compost is only one kind of 肥料, so this is the word for fertilizer in general rather than for compost specifically.

Choose 堆肥 for compost or manure as a material, 「コンポスト」 for the same idea as the English loanword, and 肥料 when you mean fertilizer in general, of which compost is just one kind.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 堆肥たいひcompost
• コンポストcompost
• 肥料ひりょうmanure
• 積み肥つみごえcompost
• 草肥くさごえcompost
• 配合土はいごうどcompost
• 培養土ばいようどpotting soil
• 混合肥料こんごうひりょうmixed fertilizer