堆肥

1. Origins, structure, and basic meaning

• Structure: Written 堆肥 and read たいひ, it is decomposed organic material made from leaves or plant scraps and worked into soil.
• Basic usage: It is used for compost made from kitchen and garden matter and mixed into a field to improve the soil.

2. Common pitfalls and similar expressions

• Not simply organic waste
  • The material has been decomposed and prepared for soil improvement rather than merely discarded.